When a Detroit Diesel engine throws a fault code, it’s the truck’s way of telling you something isn’t right. The DD5 (2017-2020) is no exception. This 5.1L inline 4-cylinder engine, designed for medium-duty applications, delivers the power and efficiency expected from Detroit Diesel. But like any modern engine, it relies on an advanced electronic control system that generates fault codes when issues arise.
Understanding these fault codes can save you time, money, and unnecessary headaches by pinpointing issues before they become costly breakdowns. Below, we provide a comprehensive guide to the Detroit Diesel DD5 (2017-2020) fault codes, their meanings, and potential troubleshooting steps.
How to Retrieve Fault Codes on a DD5 Engine
Before jumping into the list of fault codes, it’s important to know how to retrieve them. Detroit Diesel engines store fault codes in the ECM (Electronic Control Module) and can be accessed through:
- Diesel Laptops’ Diesel Explorer Software
- OEM Diagnostic Tools like Detroit Diagnostic Link (DDL)
- Dash display on some truck models
- Handheld scan tools
Once retrieved, cross-reference the fault code with the list below to determine the issue and next steps.
Common Detroit Diesel DD5 (2017-2020) Fault Codes
Here are some common fault codes found in DD5 engines and their descriptions:
Fuel System Fault Codes
- SPN 94 FMI 3 – Fuel Delivery Pressure Too High
- Possible Cause: Faulty fuel pump, clogged return line
- Solution: Inspect fuel pressure regulator, check for obstructions
- SPN 157 FMI 4 – Fuel Rail Pressure Low
- Possible Cause: Leaking fuel injector, weak fuel pump
- Solution: Check fuel pressure sensor, inspect for fuel leaks
Aftertreatment System Fault Codes
- SPN 3251 FMI 2 – DPF (Diesel Particulate Filter) Soot Level High
- Possible Cause: Excessive idling, failed regeneration
- Solution: Perform a forced regen, check DPF differential pressure sensor
- SPN 3364 FMI 10 – DEF (Diesel Exhaust Fluid) Quality Sensor Fault
- Possible Cause: Contaminated DEF, sensor failure
- Solution: Drain and replace DEF, inspect DEF injector
Turbo & Air Management Fault Codes
- SPN 102 FMI 2 – Boost Pressure Low
- Possible Cause: Turbocharger leak, clogged air filter
- Solution: Check turbo piping, inspect air intake system
- SPN 2631 FMI 31 – EGR (Exhaust Gas Recirculation) Flow Insufficient
- Possible Cause: Clogged EGR valve, faulty EGR cooler
- Solution: Clean or replace EGR components
Electrical System & Sensor Fault Codes
- SPN 639 FMI 9 – ECM Power Supply Voltage Low
- Possible Cause: Weak battery, corroded connections
- Solution: Inspect battery terminals, check alternator output
- SPN 1322 FMI 31 – Accelerator Pedal Position Sensor Fault
- Possible Cause: Faulty pedal sensor, wiring issue
- Solution: Replace pedal assembly, check wiring harness
How to Fix DD5 Fault Codes
While fault codes indicate a specific issue, resolving them often requires additional diagnostics. Here’s a step-by-step approach:
- Retrieve the fault code using a diagnostic tool.
- Cross-reference the code with the list above to identify the issue.
- Perform a visual inspection of related components (wiring, hoses, sensors, etc.).
- Use Detroit Diesel diagnostic software for in-depth troubleshooting.
- Reset the fault code after making repairs and test the system.
| Fault | SPN | FMI | Title |
| SPN 100 FMI 0 | 100 | Oil Pressure Stuck | |
| SPN 100 FMI 1 | 100 | 1 | Oil Pressure Very Low |
| SPN 100 FMI 1 | 100 | 1 | Low Engine Oil Pressure |
| SPN 100 FMI 10 | 100 | 10 | Low Oil Pressure Derate |
| SPN 100 FMI 17 | 100 | 17 | Oil Pressure Very Low |
| SPN 100 FMI 18 | 100 | 18 | Oil Pressure Low |
| SPN 100 FMI 3 | 100 | 3 | Engine Oil Pressure Switch Circuit Failed High |
| SPN 100 FMI 4 | 100 | 4 | Engine Oil Pressure Switch Circuit Failed Low |
| SPN 100 FMI 5 | 100 | 5 | Oil Pressure Sensor Stuck High – Low Speed |
| SPN 101 FMI 1 | 101 | 1 | Crankcase Pressure Rationality |
| SPN 101 FMI 2 | 101 | 2 | Sensor Drift Fault for Crankcase Pressure Sensor |
| SPN 101 FMI 3 | 101 | 3 | Crankcase Pressure Sensor Circuit Failed High |
| SPN 101 FMI 4 | 101 | 4 | Crankcase Pressure Sensor Circuit Failed Low |
| SPN 102 FMI 16 | 102 | 16 | Intake Manifold Pressure Too High |
| SPN 102 FMI 18 | 102 | 18 | Intake Manifold Pressure Too Low |
| SPN 1033 FMI 15 | 1033 | 15 | MCM Engine Run Timer Plausibility |
| SPN 1033 FMI 17 | 1033 | 17 | MCM Engine Off Timer Plausibility |
| SPN 1033 FMI 2 | 1033 | 2 | Aftertreatment Control Module Engine Hours Data Erratic, Intermittent or Incorrect |
| SPN 1071 FMI 3 | 1071 | 3 | Fan Circuit Short to Power |
| SPN 1071 FMI 4 | 1071 | 4 | Fan Circuit Short to Ground |
| SPN 1071 FMI 5 | 1071 | 5 | Fan Open Circuit |
| SPN 1072 FMI 2 | 1072 | 2 | JB1 Sporadic Error |
| SPN 1073 FMI 2 | 1073 | 2 | JB2 Sporadic Error |
| SPN 1077 FMI 14 | 1077 | 14 | Leakage in High Pressure Fuel System Too High (Leak Down Test) |
| SPN 1077 FMI 3 | 1077 | 3 | Quantity Control Valve (QCV) Circuit Failed High |
| SPN 1077 FMI 4 | 1077 | 4 | Quantity Control Valve (QCV) Circuit Failed Low |
| SPN 1077 FMI 5 | 1077 | 5 | Quantity Control Valve Error, Current Too Low |
| SPN 1077 FMI 6 | 1077 | 6 | Quantity Control Valve, Desired Current Does Not Match Actual Current |
| SPN 107 FMI 0 | 107 | Air Filter Restriction High | |
| SPN 1089 FMI 13 | 1089 | 13 | J1939 AIR1 Message (Air Supply Pressure) is Missing from Second Source Address |
| SPN 1089 FMI 9 | 1089 | 9 | J1939 AIR1 Message (Air Supply Pressure) is Missing From First Source Address |
| SPN 108 FMI 13 | 108 | 13 | Ambient Air Pressure Signal Not Available via CAN |
| SPN 108 FMI 3 | 108 | 3 | Barometric Pressure (BP) Sensor Circuit Failed High |
| SPN 108 FMI 4 | 108 | 4 | Barometric Pressure (BP) Sensor Circuit Failed Low |
| SPN 110 FMI 0 | 110 | Coolant Temperature Very High | |
| SPN 110 FMI 0 | 110 | Coolant Temperature Very High | |
| SPN 110 FMI 10 | 110 | 10 | Coolant Outlet Temperature Signal Spike |
| SPN 110 FMI 16 | 110 | 16 | Coolant Temperature High Alarm |
| SPN 110 FMI 16 | 110 | 16 | Coolant Temperature Very High |
| SPN 110 FMI 18 | 110 | 18 | Failed Coolant Thermostat (Coolant Heat Up Too Slow Compared to Modeled Coolant Temperature) |
| SPN 110 FMI 3 | 110 | 3 | Engine Coolant Outlet Temperature Circuit Failed High |
| SPN 110 FMI 4 | 110 | 4 | Coolant Outlet Temperature Circuit Failed Low |
| SPN 110 FMI 9 | 110 | 9 | Coolant Temperature Signal Not Available via Controller Area Network (CAN) |
| SPN 1112 FMI 3 | 1112 | 3 | Jake Brake Circuit Failed High |
| SPN 1112 FMI 4 | 1112 | 4 | Jake Brake Circuit Failed Low |
| SPN 1112 FMI 5 | 1112 | 5 | Jake Brake Circuit Failed Open |
| SPN 1118 FMI 16 | 1118 | 16 | EGR Flow Rate Very Low |
| SPN 111 FMI 1 | 111 | 1 | Coolant Level Very Low |
| SPN 111 FMI 13 | 111 | 13 | Coolant Level Sensor Data Not Received or Data Not Available |
| SPN 111 FMI 18 | 111 | 18 | Coolant Level Low |
| SPN 111 FMI 19 | 111 | 19 | Coolant Level Sensor Received Data in Error |
| SPN 111 FMI 3 | 111 | 3 | Coolant Level Circuit Failed High |
| SPN 111 FMI 4 | 111 | 4 | Coolant Level Circuit Failed Low |
| SPN 111 FMI 6 | 111 | 6 | Coolant Level Sensor Circuit Failed Low |
| SPN 1121 FMI 13 | 1121 | 13 | J1939 Service Brake Switch Signal from EBC1 is Missing or Not Available |
| SPN 1121 FMI 19 | 1121 | 19 | J1939 Service Brake Switch Signal from EBC1 is Erratic |
| SPN 1121 FMI 2 | 1121 | 2 | J1939 Powertrain Message (AMT – OEM Transmission) is Missing |
| SPN 1136 FMI 3 | 1136 | 3 | MCM Internal Injector Supply Voltage Too High |
| SPN 1136 FMI 4 | 1136 | 4 | UB MCM Internal Injector Supply Voltage Too Low |
| SPN 1188 FMI 10 | 1188 | 10 | Turbocharger Wastegate Actuator, Position Deviation Error 2 |
| SPN 1188 FMI 11 | 1188 | 11 | Turbocharger Wastegate Actuator, Learn Span Too Small Range 2 |
| SPN 1188 FMI 13 | 1188 | 13 | Turbocharger Wastegate Actuator, Signal Not Valid |
| SPN 1188 FMI 14 | 1188 | 14 | Turbocharger Wastegate Actuator, Actuator Power Limited |
| SPN 1188 FMI 3 | 1188 | 3 | Turbocharger Wastegate Actuator, Supply Voltage Out of Range |
| SPN 1188 FMI 31 | 1188 | 31 | Turbocharger Wastegate Actuator, Position Deviation Error |
| SPN 1188 FMI 7 | 1188 | 7 | Turbocharger Wastegate Actuator, Fail-safe Mode, Motor Off |
| SPN 120 FMI 13 | 120 | 13 | J1939 Retarder Fluid Message is Missing or Not Available |
| SPN 1231 FMI 9 | 1231 | 9 | Motor Control Module CAN 1 Signal Missing |
| SPN 1231 FMI 9 | 1231 | 9 | Aftertreatment Control Module Message Not Received or Has Stopped Arriving |
| SPN 1237 FMI 4 | 1237 | 4 | Stop Engine Override Switch Short Circuit to Ground |
| SPN 1243 FMI 14 | 1243 | 14 | Antilock Brake System Fault Restricts Automatic Gear Selection Functionality |
| SPN 1322 FMI 31 | 1322 | 31 | Idle Smoothness Control / Multiple Cylinder Misfire at Idle |
| SPN 1323 FMI 31 | 1323 | 31 | Idle Smoothness Control / Cylinder No. 1 Quantity Deficit at Idle |
| SPN 1324 FMI 31 | 1324 | 31 | Idle Smoothness Control / Cylinder No. 2 Quantity Deficit at Idle |
| SPN 1325 FMI 31 | 1325 | 31 | Idle Smoothness Control / Cylinder No. 3 Quantity Deficit at Idle |
| SPN 1326 FMI 31 | 1326 | 31 | Idle Smoothness Control / Cylinder No. 4 Quantity Deficit at Idle |
| SPN 1482 FMI 9 | 1482 | 9 | J1939 TC1 Message (Transmission Mode) is Missing |
| SPN 1484 FMI 13 | 1484 | 13 | J1939 Message was Lost (CRC Error) |
| SPN 1484 FMI 9 | 1484 | 9 | J1939 Message was Lost (Message Counter Error) |
| SPN 157 FMI 10 | 157 | 10 | Under-Capacity in the High Pressure Circuit |
| SPN 157 FMI 16 | 157 | 16 | Fuel Rail Pressure Too Low |
| SPN 157 FMI 17 | 157 | 17 | Minimum Rail Pressure Not Achieved While the Engine is Cranking |
| SPN 157 FMI 18 | 157 | 18 | Fuel Rail Pressure Too High |
| SPN 158 FMI 2 | 158 | 2 | KL15 Ignition Switch Status of CPC and MCM Do Not Match |
| SPN 158 FMI 2 | 158 | 2 | Ignition Switch Not Plausible |
| SPN 1590 FMI 19 | 1590 | 19 | Adaptive Cruise Control – General Error |
| SPN 1590 FMI 9 | 1590 | 9 | Adaptive Cruise Control Message Not Received |
| SPN 1592 FMI 13 | 1592 | 13 | J1939 HRW (High Resolution Wheel Speed) Wheel Speed Signal Missing |
| SPN 1592 FMI 19 | 1592 | 19 | J1939 HRW (High Resolution Wheel Speed) Wheel Speed Signal Erroneous |
| SPN 1592 FMI 9 | 1592 | 9 | J1939 HRW Message (High Resolution Wheel Speed) from ABS is Missing |
| SPN 1623 FMI 13 | 1623 | 13 | J1939 Tachograph Output Shaft Speed Signal Is Missing or Not Available |
| SPN 1623 FMI 9 | 1623 | 9 | J1939 Tachograph Output Shaft Speed Signal is Erratic |
| SPN 1624 FMI 13 | 1624 | 13 | J1939 Tachograph Vehicle Speed Signal is Missing or Not Available |
| SPN 1624 FMI 19 | 1624 | 19 | J1939 Tachograph Vehicle Speed Signal is Erratic |
| SPN 1624 FMI 9 | 1624 | 9 | J1939 TCO1 Message is Missing |
| SPN 1636 FMI 0 | 1636 | Charge Air Cooler Low Efficiency | |
| SPN 1636 FMI 10 | 1636 | 10 | Intake Manifold Temperature – Signal Spike |
| SPN 1636 FMI 14 | 1636 | 14 | Intake Manifold Temperature Sensor Signal Not Plausible |
| SPN 1636 FMI 16 | 1636 | 16 | Charge Air Cooler Efficiency Low |
| SPN 1636 FMI 3 | 1636 | 3 | Intake Manifold Temperature Circuit Failed High |
| SPN 1636 FMI 4 | 1636 | 4 | Intake Manifold Temperature Circuit Failed Low |
| SPN 1637 FMI 2 | 1637 | 2 | Coolant Outlet Temperature Signal Not Plausible |
| SPN 1639 FMI 2 | 1639 | 2 | Fan Speed Error |
| SPN 164 FMI 2 | 164 | 2 | Fuel Rail Pressure Drift High |
| SPN 164 FMI 20 | 164 | 20 | Fuel Rail Pressure Sensor Drift High |
| SPN 164 FMI 21 | 164 | 21 | Fuel Rail Pressure Sensor Drift Low |
| SPN 164 FMI 3 | 164 | 3 | Rail Pressure Sensor Circuit Failed High |
| SPN 164 FMI 4 | 164 | 4 | Rail Pressure Sensor Circuit Failed Low |
| SPN 164 FMI 5 | 164 | 5 | Rail Pressure Sensor Circuit Failed Open |
| SPN 1659 FMI 17 | 1659 | 17 | Thermostat Monitoring Error |
| SPN 1659 FMI 31 | 1659 | 31 | Thermostat Cool Down |
| SPN 1659 FMI 7 | 1659 | 7 | Coolant Thermostat Failed |
| SPN 1663 FMI 7 | 1663 | 7 | Optimized Idle Safety Loop Faulted |
| SPN 1669 FMI 9 | 1669 | 9 | Aftertreatment Control Module CAN 4 Signal Missing |
| SPN 1681 FMI 9 | 1681 | 9 | J1939 BM (Battery Main Switch) Message is Missing |
| SPN 168 FMI 0 | 168 | Battery Voltage High | |
| SPN 168 FMI 0 | 168 | Battery Voltage High | |
| SPN 168 FMI 0 | 168 | Battery Voltage High | |
| SPN 168 FMI 1 | 168 | 1 | Battery Voltage Low |
| SPN 168 FMI 1 | 168 | 1 | Battery Voltage Low |
| SPN 168 FMI 1 | 168 | 1 | Battery Voltage Low |
| SPN 168 FMI 14 | 168 | 14 | ECU Power-Down Not Completed (Main Battery Terminal Possibly Floating) |
| SPN 168 FMI 18 | 168 | 18 | Low Battery Voltage |
| SPN 168 FMI 18 | 168 | 18 | Battery Voltage Low |
| SPN 168 FMI 7 | 168 | 7 | Opt Idle Detected Charging System or Battery Failure |
| SPN 168 FMI 9 | 168 | 9 | Battery Connection Lost |
| SPN 1693 FMI 10 | 1693 | 10 | Wastegate Slow Response |
| SPN 1716 FMI 13 | 1716 | 13 | Evobus 5-Stage Retarder Level Calibration Not Plausible |
| SPN 1716 FMI 9 | 1716 | 9 | J1939 ERC1 Message is Missing |
| SPN 171 FMI 13 | 171 | 13 | Ambient Air Temperature Signal Not Available via the Controller Area Network |
| SPN 171 FMI 13 | 171 | 13 | Ambient Air Temperature Signal Not Available |
| SPN 171 FMI 14 | 171 | 14 | Ambient Air Temp Sensor Data Not Received this Ignition Cycle |
| SPN 171 FMI 19 | 171 | 19 | Ambient Air Temperature Signal Error |
| SPN 171 FMI 19 | 171 | 19 | AMB Message (Ambient Temperature) is Missing or Not Available |
| SPN 171 FMI 2 | 171 | 2 | Ambient Temperature Sensor Data Erratic |
| SPN 171 FMI 20 | 171 | 20 | Ambient Temperature Sensor Signal Not Plausible |
| SPN 171 FMI 3 | 171 | 3 | Ambient Temperature Sensor Failed High |
| SPN 171 FMI 3 | 171 | 3 | Ambient Temperature Circuit Failed High |
| SPN 171 FMI 4 | 171 | 4 | Ambient Temperature Sensor Failed Low |
| SPN 171 FMI 4 | 171 | 4 | Ambient Temperature Circuit Failed Low |
| SPN 171 FMI 9 | 171 | 9 | Ambient Air Temp Sensor Data Message Stopped Arriving |
| SPN 174 FMI 0 | 174 | Supply Fuel Temperature Sensor Too High | |
| SPN 174 FMI 10 | 174 | 10 | Fuel Temperature Sensor Signal Spike |
| SPN 174 FMI 17 | 174 | 17 | Fuel Temperature Sensor, Minimum Temperature Plausibility |
| SPN 174 FMI 3 | 174 | 3 | Fuel Temperature Circuit Failed High |
| SPN 174 FMI 4 | 174 | 4 | Fuel Temperature Circuit Failed Low |
| SPN 175 FMI 0 | 175 | Oil Temperature High Warning | |
| SPN 175 FMI 10 | 175 | 10 | Engine Oil Temperature Signal Spike |
| SPN 175 FMI 15 | 175 | 15 | Engine Oil Temperature High Pre Warning |
| SPN 175 FMI 18 | 175 | 18 | Engine Oil Temperature Rises Too Slow or Not At All |
| SPN 175 FMI 20 | 175 | 20 | Engine Oil Temperature Signal Not Plausible |
| SPN 175 FMI 3 | 175 | 3 | Engine Oil Temperature Circuit Failed High |
| SPN 175 FMI 4 | 175 | 4 | Engine Oil Temperature Circuit Failed Low |
| SPN 1761 FMI 18 | 1761 | 18 | Diesel Exhaust Fluid (DEF) Tank Level 1 Condition – Empty Tank |
| SPN 1761 FMI 2 | 1761 | 2 | Diesel Exhaust Fluid (DEF) Tank Level Sensor Circuit Data Erratic, Intermittent or Incorrect |
| SPN 1761 FMI 3 | 1761 | 3 | Diesel Exhaust Fluid Tank Level Sensor Circuit Failed High |
| SPN 1761 FMI 31 | 1761 | 31 | Diesel Exhaust Fluid (DEF) Tank Level 3 Condition – Tank Level Very Low |
| SPN 1761 FMI 4 | 1761 | 4 | Diesel Exhaust Fluid Tank Level Sensor Circuit Failed Low |
| SPN 1814 FMI 9 | 1814 | 9 | VDC1 Message Was Not Received or Has Stopped Arriving |
| SPN 1845 FMI 9 | 1845 | 9 | J1939 TCFG2 Message is Missing |
| SPN 188 FMI 31 | 188 | 31 | Idle Speed is Higher than Targeted Idle Speed |
| SPN 190 FMI 0 | 190 | Engine Speed High | |
| SPN 190 FMI 16 | 190 | 16 | Engine Overspeed While Stationary |
| SPN 190 FMI 9 | 190 | 9 | Engine Speed Signal Not Available via Controller Area Network (CAN) |
| SPN 191 FMI 13 | 191 | 13 | J1939 Transmission Output Shaft Speed Signal is Missing or Not Available |
| SPN 191 FMI 19 | 191 | 19 | J1939 Transmission Output Shaft Speed Signal is Erratic |
| SPN 191 FMI 9 | 191 | 9 | J1939 ETC1 Message is Missing |
| SPN 2003 FMI 9 | 2003 | 9 | J1939 Message is Missing from Source Address 3 (dec) |
| SPN 2011 FMI 9 | 2011 | 9 | J1939 Message is Missing from Source Address 11 (dec) |
| SPN 2017 FMI 9 | 2017 | 9 | J1939 Message is Missing from Source Address 17 (dec) |
| SPN 2023 FMI 9 | 2023 | 9 | J1939 Message is Missing from Source Address 23 (dec) |
| SPN 2025 FMI 9 | 2025 | 9 | J1939 Message is Missing from Source Address 25 (dec) |
| SPN 2033 FMI 9 | 2033 | 9 | J1939 Message is Missing from Source Address 33 (dec) |
| SPN 2042 FMI 9 | 2042 | 9 | J1939 Message is Missing from Source Address 42 (dec) |
| SPN 2049 FMI 9 | 2049 | 9 | J1939 Message is Missing from Source Address 49 (dec) |
| SPN 247 FMI 0 | 247 | MCM Engine Hours Data Higher than Expected | |
| SPN 247 FMI 1 | 247 | 1 | MCM Engine Hours Data Lower than Expected |
| SPN 247 FMI 10 | 247 | 10 | MCM Engine Hours Data Increasing at an Implausible Rate |
| SPN 247 FMI 14 | 247 | 14 | ACM Reported Ash Mileage is Lower than the CPC Stored Value |
| SPN 247 FMI 9 | 247 | 9 | MCM Engine Hours Data Not Received or Stopped Arriving |
| SPN 2596 FMI 9 | 2596 | 9 | J1939 CM1 Message (Maximum Vehicle Speed Limit) is Missing or Not Available |
| SPN 2623 FMI 14 | 2623 | 14 | 2-Channel Accelerator Pedal GAS1 and GAS2 Signal Missing |
| SPN 2623 FMI 2 | 2623 | 2 | Accelerator Pedal “In-Range” Fault |
| SPN 2623 FMI 8 | 2623 | 8 | 2-Channel Accelerator Pedal Signal 2 Missing |
| SPN 2629 FMI 10 | 2629 | 10 | Turbocharger Compressor Outlet Temperature – Signal Spike |
| SPN 2629 FMI 3 | 2629 | 3 | Turbocharger Compressor Outlet Temperature Circuit Failed High |
| SPN 2629 FMI 4 | 2629 | 4 | Turbocharger Compressor Outlet Temperature Circuit Failed Low |
| SPN 2630 FMI 10 | 2630 | 10 | Charge Air Cooler Temperature Signal Spike |
| SPN 2630 FMI 14 | 2630 | 14 | Charge Air Cooler Outlet Sensor Signal Not Plausible |
| SPN 2630 FMI 3 | 2630 | 3 | Charge Air Cooler Temperature Circuit Failed High |
| SPN 2630 FMI 4 | 2630 | 4 | Charge Air Cooler Temperature Circuit Failed Low |
| SPN 2631 FMI 1 | 2631 | 1 | Low Air Flow |
| SPN 2631 FMI 3 | 2631 | 3 | Charge Air Cooler Outlet (CAC) Pressure Circuit Failed High |
| SPN 2631 FMI 4 | 2631 | 4 | Charge Air Cooler (CAC) Outlet Pressure Circuit Failed Low |
| SPN 2646 FMI 3 | 2646 | 3 | Digital Output 4 02 Circuit Failed High |
| SPN 2646 FMI 4 | 2646 | 4 | Digital Output 4 02 Circuit Failed Low |
| SPN 2646 FMI 5 | 2646 | 5 | Digital Output 4 02 Circuit Open |
| SPN 2659 FMI 8 | 2659 | 8 | EGR Valve Actuator Slow Response |
| SPN 2797 FMI 3 | 2797 | 3 | Fuel Injector Needle Control Valve Front Bank, Shorted to Battery Power |
| SPN 2797 FMI 4 | 2797 | 4 | Fuel Injector Needle Control Front Bank, Shorted to Ground |
| SPN 2798 FMI 3 | 2798 | 3 | Fuel Injector Needle Control Valve Rear Bank, Shorted to Battery Power |
| SPN 2798 FMI 4 | 2798 | 4 | Fuel Injector Needle Control Rear Bank, Shorted to Ground |
| SPN 27 FMI 0 | 27 | EGR Valve Failed to Attain Closed Position | |
| SPN 27 FMI 1 | 27 | 1 | EGR Valve Failed to Attain Open Position |
| SPN 27 FMI 10 | 27 | 10 | EGR Valve Position Deviation Too High |
| SPN 27 FMI 12 | 27 | 12 | EGR Valve Frozen |
| SPN 27 FMI 3 | 27 | 3 | EGR Valve Position Circuit Failed High |
| SPN 27 FMI 4 | 27 | 4 | EGR Valve Position Circuit Failed Low |
| SPN 27 FMI 7 | 27 | 7 | EGR Valve Spring Broken |
| SPN 2882 FMI 13 | 2882 | 13 | Off-Highway Engine Configuration Selection Message on J1939 Not Received or Has Stopped Arriving |
| SPN 2900 FMI 9 | 2900 | 9 | J1939 ETC7 Message is Missing |
| SPN 3031 FMI 10 | 3031 | 10 | DEF Tank Temperature Sensor Circuit Range / Performance |
| SPN 3031 FMI 3 | 3031 | 3 | Diesel Exhaust Fluid Tank Temperature Sensor Circuit Failed High |
| SPN 3031 FMI 4 | 3031 | 4 | Diesel Exhaust Fluid Tank Temperature Sensor Circuit Failed Low |
| SPN 3056 FMI 14 | 3056 | 14 | O₂ Sensor Rationality Error During Coast |
| SPN 3056 FMI 2 | 3056 | 2 | Selective Catalyst Reduction Inlet NOx Sensor – Error |
| SPN 3056 FMI 2 | 3056 | 2 | O₂ Sensor Heater Temperature Error |
| SPN 3056 FMI 4 | 3056 | 4 | O₂ Sensor Heater Performance Error |
| SPN 3056 FMI 5 | 3056 | 5 | O₂ Sensor Signal Reference Circuit Failed Open |
| SPN 3057 FMI 2 | 3057 | 2 | Selective Catalyst Reduction Outlet NOx Sensor – Error |
| SPN 3058 FMI 10 | 3058 | 10 | Exhaust Gas Recirculation Slow Response |
| SPN 3058 FMI 16 | 3058 | 16 | Exhaust Gas Recirculation High Flow Detected by Lambda Deviation Monitor |
| SPN 3058 FMI 18 | 3058 | 18 | Exhaust Gas Recirculation Low Flow Detected by Lambda Deviation Monitor |
| SPN 3058 FMI 9 | 3058 | 9 | EGR Slow Response Low Box |
| SPN 3061 FMI 1 | 3061 | 1 | Cold Start Emission Reduction Strategy Fault Condition for BOI Main |
| SPN 3216 FMI 10 | 3216 | 10 | Selective Catalyst Reduction Inlet NOx Sensor – Signal Erratic |
| SPN 3216 FMI 13 | 3216 | 13 | Selective Catalyst Reduction Inlet NOx Sensor Signal Not Available |
| SPN 3216 FMI 14 | 3216 | 14 | NOx Raw Sensor Does Not Support Self Diagnosis |
| SPN 3216 FMI 16 | 3216 | 16 | Engine Out NOx Sensor Drifted Low |
| SPN 3216 FMI 16 | 3216 | 16 | NOX Inlet Sensor Plausibility Error High |
| SPN 3216 FMI 20 | 3216 | 20 | NOx Raw Sensor Diagnosis Oxygen Pump Capacity High |
| SPN 3216 FMI 21 | 3216 | 21 | NOx Raw Sensor Diagnosis Oxygen Pump Capacity Low |
| SPN 3216 FMI 21 | 3216 | 21 | Selective Catalyst Reduction (SCR) Inlet NOx Sensor – Drift (Low Box) |
| SPN 3217 FMI 10 | 3217 | 10 | Closed Loop Control of EGR Cannot Be Achieved |
| SPN 3217 FMI 11 | 3217 | 11 | Oxygen Sensor Signal Lines Short Circuit to Battery |
| SPN 3217 FMI 13 | 3217 | 13 | Oxygen Sensor ATIC Configuration Fault |
| SPN 3217 FMI 14 | 3217 | 14 | Oxygen Sensor Not Plausible During Coast (Signal Drifted) |
| SPN 3217 FMI 19 | 3217 | 19 | Oxygen Sensor ATIC Communication Fault |
| SPN 3217 FMI 2 | 3217 | 2 | Engine Out Lambda Sensor Drift Low |
| SPN 3217 FMI 3 | 3217 | 3 | Selective Catalyst Reduction Inlet NOx Sensor Circuit Failed High |
| SPN 3217 FMI 3 | 3217 | 3 | O₂ Sensor Failed High |
| SPN 3217 FMI 4 | 3217 | 4 | O₂ Sensor Failed Low |
| SPN 3217 FMI 5 | 3217 | 5 | Oxygen Sensor Open Circuit on Line VRC |
| SPN 3217 FMI 5 | 3217 | 5 | Selective Catalyst Reduction Inlet NOx Sensor Circuit Failed Open |
| SPN 3217 FMI 6 | 3217 | 6 | Oxygen Sensor Signal Lines Short Circuit to Ground |
| SPN 3217 FMI 7 | 3217 | 7 | Oxygen Sensor Too Lean During Load (Not Mounted) |
| SPN 3222 FMI 3 | 3222 | 3 | Oxygen Sensor Heater High Side Short Circuit to Battery |
| SPN 3222 FMI 4 | 3222 | 4 | Oxygen Sensor Heater High Side Short Circuit to Ground |
| SPN 3223 FMI 18 | 3223 | 18 | Oxygen Sensor Heater Low Power (Temperature Out of Range) |
| SPN 3223 FMI 3 | 3223 | 3 | O₂ Sensor Heater Control Circuit (High Side), Short-Circuit to Battery |
| SPN 3223 FMI 4 | 3223 | 4 | O₂ Sensor Heater Control Circuit (High Side), Short-Circuit to Ground |
| SPN 3223 FMI 5 | 3223 | 5 | Oxygen Sensor Heater Open Circuit |
| SPN 3223 FMI 6 | 3223 | 6 | Oxygen Sensor Heater Circuit Overload |
| SPN 3225 FMI 11 | 3225 | 11 | Oxygen Sensor Open Circuit on Line VG |
| SPN 3225 FMI 14 | 3225 | 14 | Oxygen Sensor Open Circuit on Line VIP |
| SPN 3225 FMI 3 | 3225 | 3 | Oxygen Sensor Heater Low Side Short Circuit to Battery |
| SPN 3225 FMI 4 | 3225 | 4 | Oxygen Sensor Heater Low Side Short Circuit to Ground |
| SPN 3225 FMI 5 | 3225 | 5 | Oxygen Sensor Open Circuit on Line VN |
| SPN 3226 FMI 10 | 3226 | 10 | Outlet NOx Sensor Signal Erratic |
| SPN 3226 FMI 13 | 3226 | 13 | Selective Catalyst Reduction Outlet NOx Sensor Signal Not Available |
| SPN 3226 FMI 20 | 3226 | 20 | Selective Catalyst Reduction Outlet NOx Sensor – Drift Low |
| SPN 3226 FMI 21 | 3226 | 21 | NOx Outlet Sensor Drift High |
| SPN 3227 FMI 2 | 3227 | 2 | Outlet NOx Sensor Circuit Range / Performance Bank 1 Sensor 2 |
| SPN 3227 FMI 3 | 3227 | 3 | Selective Catalyst Reduction Outlet NOx Sensor Lambda 1 Circuit Failed High |
| SPN 3227 FMI 5 | 3227 | 5 | Selective Catalyst Reduction Outlet NOx Sensor Lambda 1 Circuit Failed Open |
| SPN 3236 FMI 9 | 3236 | 9 | Exhaust Mass Signal Not Available via Controller Area Network |
| SPN 3238 FMI 2 | 3238 | 2 | Selective Catalyst Reduction Outlet NOx Sensor Failure to Activate |
| SPN 3242 FMI 17 | 3242 | 17 | Diesel Oxidation Catalyst Inlet Temperature Out of Range Low Preventing HC Dosing |
| SPN 3242 FMI 20 | 3242 | 20 | Diesel Oxidation Catalyst Temperature Drift – Inlet High or Outlet Low |
| SPN 3242 FMI 3 | 3242 | 3 | Diesel Oxidation Catalyst Inlet Temperature Sensor Circuit Failed High |
| SPN 3242 FMI 4 | 3242 | 4 | Diesel Oxidation Catalyst Inlet Temperature Sensor Circuit Failed Low |
| SPN 3242 FMI 8 | 3242 | 8 | Diesel Oxidation Catalyst Inlet Temperature – Signal Spike |
| SPN 3246 FMI 0 | 3246 | Diesel Particulate Filter Outlet Temperature – Very High | |
| SPN 3246 FMI 15 | 3246 | 15 | Diesel Particulate Filter Outlet Temperature – High |
| SPN 3246 FMI 2 | 3246 | 2 | Diesel Particulate Filter Outlet Temperature Signal – Not Plausible |
| SPN 3246 FMI 20 | 3246 | 20 | Diesel Particulate Filter Outlet / Selective Catalyst Reduction Inlet Temperature – Abnormal |
| SPN 3246 FMI 21 | 3246 | 21 | Diesel Particulate Filter Temperature Sensor – Plausibility Error |
| SPN 3246 FMI 3 | 3246 | 3 | Diesel Particulate Filter Outlet Temperature Sensor Circuit Failed High |
| SPN 3246 FMI 4 | 3246 | 4 | Diesel Particulate Filter Outlet Temperature Sensor Circuit Failed Low |
| SPN 3246 FMI 8 | 3246 | 8 | Diesel Particulate Filter Outlet Temperature – Signal Spike |
| SPN 3250 FMI 0 | 3250 | Diesel Oxidation Catalyst Outlet Temperature Very High | |
| SPN 3250 FMI 15 | 3250 | 15 | Diesel Oxidation Catalyst Outlet Temperature High |
| SPN 3250 FMI 2 | 3250 | 2 | Diesel Oxidation Catalyst Temperature Sensor – Plausibility Error |
| SPN 3250 FMI 20 | 3250 | 20 | Diesel Oxidation Catalyst Temperature Drift – Inlet Low or Outlet High |
| SPN 3250 FMI 3 | 3250 | 3 | Diesel Oxidation Catalyst (DOC) Outlet Temperature Sensor Circuit Failed High |
| SPN 3250 FMI 31 | 3250 | 31 | Abnormal Diesel Oxidation Catalyst Temperature Rise |
| SPN 3250 FMI 4 | 3250 | 4 | Diesel Oxidation Catalyst (DOC) Outlet Temperature Circuit Failed Low |
| SPN 3250 FMI 7 | 3250 | 7 | Diesel Oxidation Catalyst Outlet Temperature Response Error |
| SPN 3250 FMI 8 | 3250 | 8 | Diesel Oxidation Catalyst Outlet Temperature – Signal Spike |
| SPN 3251 FMI 0 | 3251 | Diesel Particulate Filter Pressure Out of Range Very High | |
| SPN 3251 FMI 20 | 3251 | 20 | Diesel Oxidation Catalyst Inlet Pressure – Not Plausible |
| SPN 3251 FMI 21 | 3251 | 21 | Diesel Oxidation Catalyst Inlet / Outlet Pressure – Not Plausible |
| SPN 3306 FMI 0 | 3306 | Variable Camshaft Phase, Out of Range | |
| SPN 3306 FMI 10 | 3306 | 10 | Variable Camshaft Phase, Slow Response |
| SPN 3306 FMI 14 | 3306 | 14 | Variable Camshaft Phase Sensor Adaption Fail |
| SPN 3306 FMI 2 | 3306 | 2 | Variable Camshaft Phase, Position Deviation |
| SPN 3306 FMI 3 | 3306 | 3 | Variable Camshaft Phase, Shorted to Battery |
| SPN 3306 FMI 31 | 3306 | 31 | Variable Camshaft Phase, at State Joggling |
| SPN 3306 FMI 4 | 3306 | 4 | Variable Camshaft Phaser, Shorted to Ground |
| SPN 3306 FMI 5 | 3306 | 5 | Variable Camshaft Phase, Open Load |
| SPN 3306 FMI 7 | 3306 | 7 | VCP Position Deviation Delayed Response Diagnostic |
| SPN 3353 FMI 2 | 3353 | 2 | Generator (Charging System) D+ Terminal Failure |
| SPN 3361 FMI 3 | 3361 | 3 | Diesel Exhaust Fluid Dosing Valve Circuit Failed High |
| SPN 3361 FMI 31 | 3361 | 31 | Diesel Exhaust Fluid Dosing Unit Error |
| SPN 3361 FMI 4 | 3361 | 4 | Diesel Exhaust Fluid System Circuit Failed Low |
| SPN 3361 FMI 5 | 3361 | 5 | Diesel Exhaust Fluid Dosing Valve Circuit Failed Open |
| SPN 3363 FMI 0 | 3363 | Diesel Exhaust Fluid Tank Temperature – High | |
| SPN 3363 FMI 1 | 3363 | 1 | Diesel Exhaust Fluid Tank Temperature – Low |
| SPN 3363 FMI 3 | 3363 | 3 | Diesel Exhaust Fluid Coolant Valve Circuit Failed High |
| SPN 3363 FMI 4 | 3363 | 4 | DEF Coolant Valve Circuit Failed Low |
| SPN 3363 FMI 5 | 3363 | 5 | Diesel Exhaust Fluid Coolant Valve Circuit Failed Open |
| SPN 3461 FMI 2 | 3461 | 2 | PTO 1 Feedback, but Not Activated |
| SPN 3461 FMI 7 | 3461 | 7 | PTO 1 Activated, but No Feedback |
| SPN 3471 FMI 3 | 3471 | 3 | HC Doser Circuit Failed High |
| SPN 3471 FMI 4 | 3471 | 4 | HC Doser Circuit Failed Low |
| SPN 3471 FMI 5 | 3471 | 5 | HC Doser Circuit Failed Open |
| SPN 3480 FMI 0 | 3480 | Fuel Compensation Pressure High | |
| SPN 3480 FMI 1 | 3480 | 1 | Doser Fuel Supply Pressure Abnormal |
| SPN 3480 FMI 14 | 3480 | 14 | Doser FLP Sensors Failed Self Test |
| SPN 3480 FMI 21 | 3480 | 21 | Fuel Cut-off Valve Pressure Not Plausible |
| SPN 3480 FMI 3 | 3480 | 3 | Fuel Compensation Pressure Sensor Circuit Failed High |
| SPN 3480 FMI 4 | 3480 | 4 | Fuel Compensation Pressure Sensor Circuit Failed Low |
| SPN 3482 FMI 3 | 3482 | 3 | Fuel Cut-Off Valve Failed High |
| SPN 3482 FMI 4 | 3482 | 4 | Fuel Cut Off Valve Failed Low |
| SPN 3482 FMI 5 | 3482 | 5 | Fuel Cut Off Valve Failed Open |
| SPN 3482 FMI 7 | 3482 | 7 | Fuel Cut-off Valve Failed Self Test |
| SPN 3490 FMI 3 | 3490 | 3 | DEF Purge Lamp Circuit Failed High |
| SPN 3490 FMI 4 | 3490 | 4 | DEF Purge Lamp Circuit Failed Low |
| SPN 3490 FMI 5 | 3490 | 5 | DEF Purge Lamp Circuit Failed Open |
| SPN 3509 FMI 3 | 3509 | 3 | 5 V Sensor Supply Bank 1 Circuit Failed High |
| SPN 3509 FMI 3 | 3509 | 3 | 5 V Sensor Supply Bank 1 Circuit Failed High |
| SPN 3509 FMI 4 | 3509 | 4 | 5 V Sensor Supply Bank 1 Circuit Failed Low |
| SPN 3509 FMI 4 | 3509 | 4 | 5 V Sensor Supply Bank 1 Circuit Failed Low |
| SPN 3510 FMI 3 | 3510 | 3 | 5 V Sensor Supply Bank 2 Circuit Failed High |
| SPN 3510 FMI 3 | 3510 | 3 | Aftertreatment Control Module 2 Sensor Supply 2 Short to Battery |
| SPN 3510 FMI 4 | 3510 | 4 | 5 V Sensor Supply Bank 2 Circuit Failed Low |
| SPN 3510 FMI 4 | 3510 | 4 | Accelerator Pedal Supply Voltage Circuit Failed Low |
| SPN 3510 FMI 4 | 3510 | 4 | Aftertreatment Control Module 2 Sensor Supply Bank 2 Short to Ground |
| SPN 3510 FMI 7 | 3510 | 7 | Accelerator Pedal Supply Voltage Circuit Failed High |
| SPN 3510 FMI 8 | 3510 | 8 | 2-Channel Accelerator Pedal Supply Voltage Missing |
| SPN 3511 FMI 3 | 3511 | 3 | 3 V Sensor Supply Bank 1 Circuit Failed High |
| SPN 3511 FMI 3 | 3511 | 3 | Remote Accelerator Pedal Supply Voltage Circuit Failed High |
| SPN 3511 FMI 4 | 3511 | 4 | Remote Accelerator Pedal Supply Voltage Circuit Failed Low |
| SPN 3511 FMI 4 | 3511 | 4 | 3 V Sensor Supply Bank 1 Circuit Failed Low |
| SPN 3512 FMI 3 | 3512 | 3 | 3 V Sensor Supply Bank 2 Circuit Failed High |
| SPN 3512 FMI 3 | 3512 | 3 | 3 V Sensor Supply Bank 2 Circuit Failed High |
| SPN 3512 FMI 4 | 3512 | 4 | 3 V Sensor Supply Bank 2 Circuit Failed Low |
| SPN 3512 FMI 4 | 3512 | 4 | 3 V Sensor Supply Bank 2 Circuit Failed Low |
| SPN 3513 FMI 3 | 3513 | 3 | U12 (MCM Internal) Voltage Too High |
| SPN 3513 FMI 4 | 3513 | 4 | U12 (MCM Internal) Voltage Too Low |
| SPN 3514 FMI 3 | 3514 | 3 | UB+10 V (MCM Internal) Voltage Too High |
| SPN 3514 FMI 4 | 3514 | 4 | UB+10 V (MCM Internal) Voltage Too Low |
| SPN 3556 FMI 0 | 3556 | Regeneration Temperature – Out of Range High | |
| SPN 3556 FMI 1 | 3556 | 1 | Regeneration Temperature – Out Of Range Low |
| SPN 3563 FMI 10 | 3563 | 10 | Barometric Pressure and Intake Manifold Pressure Rationality Error |
| SPN 3563 FMI 21 | 3563 | 21 | Ambient and Inlet Manifold Pressure Difference (High Box) |
| SPN 3597 FMI 3 | 3597 | 3 | Proportional Valve Bank 1 Circuit Failed High |
| SPN 3597 FMI 3 | 3597 | 3 | High Side Digital Output 1 Circuit Failed High |
| SPN 3597 FMI 4 | 3597 | 4 | Proportional Valve Bank 1 Circuit Failed Low |
| SPN 3597 FMI 4 | 3597 | 4 | High Side Digital Output 1 Circuit Failed Low |
| SPN 3597 FMI 6 | 3597 | 6 | Power Supply Bank 1 Overcurrent Occurred |
| SPN 3598 FMI 3 | 3598 | 3 | Proportional Valve Bank 2 Circuit Failed High |
| SPN 3598 FMI 4 | 3598 | 4 | Proportional Valve Bank 2 Circuit Failed Low |
| SPN 3598 FMI 6 | 3598 | 6 | Power Supply Bank 2 Overcurrent Occurred |
| SPN 3599 FMI 3 | 3599 | 3 | High Side Digital Output 3 Circuit Failed High |
| SPN 3599 FMI 3 | 3599 | 3 | Motor Control Module Internal Injector Power Supply Failed High |
| SPN 3599 FMI 4 | 3599 | 4 | High Side Digital Output 3 Circuit Failed Low |
| SPN 3599 FMI 4 | 3599 | 4 | Motor Control Module Internal Fuel Injector Power Supply Failed Low |
| SPN 3606 FMI 9 | 3606 | 9 | J1939 PROP04 Message is Missing from CDI |
| SPN 3609 FMI 3 | 3609 | 3 | Diesel Oxidation Catalyst Inlet Pressure Sensor Circuit Failed High |
| SPN 3609 FMI 4 | 3609 | 4 | Diesel Oxidation Catalyst Inlet Pressure Sensor Circuit Failed Low |
| SPN 3610 FMI 2 | 3610 | 2 | Diesel Oxidation Catalyst Inlet Pressure – Not Plausible |
| SPN 3610 FMI 3 | 3610 | 3 | Diesel Particulate Filter Outlet Pressure Sensor Circuit Failed High |
| SPN 3610 FMI 4 | 3610 | 4 | Diesel Particulate Filter Outlet Pressure Sensor Circuit Failed Low |
| SPN 3645 FMI 9 | 3645 | 9 | J1939 TCI Message (Transfer Case Information) is Missing |
| SPN 3695 FMI 13 | 3695 | 13 | DPF Regen Inhibit MUX Switch Message Contains SNV Indicator |
| SPN 3695 FMI 14 | 3695 | 14 | DPF Regen Inhibit MUX Switch Message Not Received this Ign Cycle |
| SPN 3695 FMI 19 | 3695 | 19 | DPF Regen Inhibit MUX Switch Message Contains Data Error Indicator |
| SPN 3695 FMI 9 | 3695 | 9 | DPF Regen Inhibit MUX Switch Message Stopped Arriving |
| SPN 3696 FMI 13 | 3696 | 13 | DPF Regen Force MUX Switch Message Contains SNV Indicator |
| SPN 3696 FMI 14 | 3696 | 14 | DPF Regen Force MUX Switch Message Not Received this Ignition Cycle |
| SPN 3696 FMI 19 | 3696 | 19 | DPF Regen Force MUX Switch Message Contains Data Error Indicator |
| SPN 3696 FMI 4 | 3696 | 4 | Diesel Particulate Filter Regeneration Switch Short Circuit to Ground |
| SPN 3696 FMI 9 | 3696 | 9 | DPF Regen Force MUX Switch Message Stopped Arriving |
| SPN 3711 FMI 31 | 3711 | 31 | Parked Regen Failed – DOC Temp in Low Preventing Dosing |
| SPN 3713 FMI 31 | 3713 | 31 | High Idle Regeneration Aborted – Low Regeneration Temperature |
| SPN 3716 FMI 31 | 3716 | 31 | High Idle Regeneration (HIR) Aborted – Low Coolant Temp |
| SPN 3719 FMI 0 | 3719 | Soot Level Very High | |
| SPN 3719 FMI 0 | 3719 | DPF Filter Soot Level is Very High | |
| SPN 3719 FMI 15 | 3719 | 15 | Silent Code that Logs When the Diesel Particulate Filter Regeneration Lamp is Flashing in “Regen Zone 3” |
| SPN 3719 FMI 16 | 3719 | 16 | Soot Level High |
| SPN 3719 FMI 16 | 3719 | 16 | DPF Filter Soot Level is High |
| SPN 3719 FMI 31 | 3719 | 31 | Silent Code that Logs When the Diesel Particulate Filter Regeneration Lamp is Flashing in “Regen Zone 2” |
| SPN 3720 FMI 15 | 3720 | 15 | Diesel Particulate Filter Has Reached the End of Its Service Life |
| SPN 3840 FMI 3 | 3840 | 3 | Frequency Output 4 15 Circuit Failed High |
| SPN 3840 FMI 4 | 3840 | 4 | Frequency Output 4 15 Circuit Failed Low |
| SPN 3840 FMI 5 | 3840 | 5 | Frequency Output 4 15 Circuit Open |
| SPN 3841 FMI 3 | 3841 | 3 | Frequency Output 4 11 Circuit Failed High |
| SPN 3841 FMI 4 | 3841 | 4 | Frequency Output 4 11 Circuit Failed Low |
| SPN 3841 FMI 5 | 3841 | 5 | Frequency Output 4 11 Circuit Open |
| SPN 3842 FMI 3 | 3842 | 3 | Analog Ground 3 02 Circuit Failed High |
| SPN 3842 FMI 4 | 3842 | 4 | Analog Ground 3 02 Circuit Failed Low |
| SPN 3842 FMI 5 | 3842 | 5 | Analog Ground 3 02 Circuit Open |
| SPN 3843 FMI 3 | 3843 | 3 | Digital Input 1 01 Circuit Failed High |
| SPN 3843 FMI 4 | 3843 | 4 | Digital Input 1 01 Circuit Failed Low |
| SPN 3844 FMI 3 | 3844 | 3 | Digital Input 1 02 Circuit Failed High |
| SPN 3844 FMI 4 | 3844 | 4 | Digital Input 1 02 Circuit Failed Low |
| SPN 3845 FMI 3 | 3845 | 3 | Digital Input 1 12 Circuit Failed High |
| SPN 3845 FMI 4 | 3845 | 4 | Digital Input 1 12 Circuit Failed Low |
| SPN 3846 FMI 3 | 3846 | 3 | Digital Input 1 14 Circuit Failed High |
| SPN 3846 FMI 4 | 3846 | 4 | Digital Input 1 14 Circuit Failed Low |
| SPN 3847 FMI 3 | 3847 | 3 | Digital Input 1 15 Circuit Failed High |
| SPN 3847 FMI 4 | 3847 | 4 | Digital Input 1 15 Circuit Failed Low |
| SPN 3848 FMI 3 | 3848 | 3 | Digital Input 1 16 Circuit Failed High |
| SPN 3848 FMI 4 | 3848 | 4 | Digital Input 1 16 Circuit Failed Low |
| SPN 3849 FMI 3 | 3849 | 3 | Digital Input 1 17 Circuit Failed High |
| SPN 3849 FMI 4 | 3849 | 4 | Digital Input 1 17 Circuit Failed Low |
| SPN 3850 FMI 3 | 3850 | 3 | Digital Input 1 11 Circuit Failed High |
| SPN 3850 FMI 4 | 3850 | 4 | Digital Input 1 11 Circuit Failed Low |
| SPN 3851 FMI 3 | 3851 | 3 | Digital Input 2 09 Circuit Failed High |
| SPN 3851 FMI 4 | 3851 | 4 | Digital Input 2 09 Circuit Failed Low |
| SPN 3852 FMI 3 | 3852 | 3 | Digital Input 2 11 Circuit Failed High |
| SPN 3852 FMI 4 | 3852 | 4 | Digital Input 2 11 Circuit Failed Low |
| SPN 3853 FMI 3 | 3853 | 3 | Digital Input 2 12 Circuit Failed High |
| SPN 3853 FMI 4 | 3853 | 4 | Digital Input 2 12 Circuit Failed Low |
| SPN 3854 FMI 3 | 3854 | 3 | Digital Input 2 13 Circuit Failed High |
| SPN 3854 FMI 4 | 3854 | 4 | Digital Input 2 13 Circuit Failed Low |
| SPN 3855 FMI 3 | 3855 | 3 | Digital Input 2 14 Circuit Failed High |
| SPN 3855 FMI 4 | 3855 | 4 | Digital Input 2 14 Circuit Failed Low |
| SPN 3856 FMI 3 | 3856 | 3 | Digital Input 2 15 Circuit Failed High |
| SPN 3856 FMI 4 | 3856 | 4 | Digital Input 2 15 Circuit Failed Low |
| SPN 3857 FMI 3 | 3857 | 3 | Digital Input 2 07 Circuit Failed High |
| SPN 3857 FMI 4 | 3857 | 4 | Digital Input 2 07 Circuit Failed Low |
| SPN 3858 FMI 3 | 3858 | 3 | Digital Input 2 08 Circuit Failed High |
| SPN 3858 FMI 4 | 3858 | 4 | Digital Input 2 08 Circuit Failed Low |
| SPN 3859 FMI 3 | 3859 | 3 | Digital Input 4 16 Circuit Failed High |
| SPN 3859 FMI 4 | 3859 | 4 | Digital Input 4 16 Circuit Failed Low |
| SPN 3860 FMI 3 | 3860 | 3 | Digital Input 4 18 Circuit Failed High |
| SPN 3860 FMI 4 | 3860 | 4 | Digital Input 4 18 Circuit Failed Low |
| SPN 3861 FMI 3 | 3861 | 3 | Digital Input 4 13 Circuit Failed High |
| SPN 3861 FMI 4 | 3861 | 4 | Digital Input 4 13 Circuit Failed Low |
| SPN 3862 FMI 3 | 3862 | 3 | Digital Input 1 10 Circuit Failed High |
| SPN 3862 FMI 4 | 3862 | 4 | Digital Input 1 10 Circuit Failed Low |
| SPN 3863 FMI 3 | 3863 | 3 | Digital Input 4 17 Circuit Failed High |
| SPN 3863 FMI 4 | 3863 | 4 | Digital Input 4 17 Circuit Failed Low |
| SPN 3864 FMI 3 | 3864 | 3 | Digital Input 3 18 Circuit Failed High |
| SPN 3864 FMI 4 | 3864 | 4 | Digital Input 3 18 Circuit Failed Low |
| SPN 3865 FMI 3 | 3865 | 3 | Digital Input 4 08 Circuit Failed High |
| SPN 3865 FMI 4 | 3865 | 4 | Digital Input 4 08 Circuit Failed Low |
| SPN 3866 FMI 3 | 3866 | 3 | Digital Input 4 04 Circuit Failed High |
| SPN 3866 FMI 4 | 3866 | 4 | Digital Input 4 04 Circuit Failed Low |
| SPN 3867 FMI 3 | 3867 | 3 | Digital Input 4 05 Circuit Failed High |
| SPN 3867 FMI 4 | 3867 | 4 | Digital Input 4 05 Circuit Failed Low |
| SPN 3868 FMI 3 | 3868 | 3 | Digital Input 4 03 Circuit Failed High |
| SPN 3868 FMI 4 | 3868 | 4 | Digital Input 4 03 Circuit Failed Low |
| SPN 3869 FMI 3 | 3869 | 3 | Digital Input 4 01 Circuit Failed High |
| SPN 3869 FMI 4 | 3869 | 4 | Digital Input 4 01 Circuit Failed Low |
| SPN 3870 FMI 3 | 3870 | 3 | Digital Input 4 02 Circuit Failed High |
| SPN 3870 FMI 4 | 3870 | 4 | Digital Input 4 02 Circuit Failed Low |
| SPN 3871 FMI 2 | 3871 | 2 | Transmission Speed Failure |
| SPN 3871 FMI 3 | 3871 | 3 | Speed Sensor 4 04 (Transmission or KL. W) Circuit Failed High |
| SPN 3871 FMI 4 | 3871 | 4 | Speed Sensor 4 04 (Transmission or KL. W) Circuit Failed Low |
| SPN 3871 FMI 5 | 3871 | 5 | Speed Sensor 4 04 (Transmission or KL. W) Circuit |
| SPN 3872 FMI 3 | 3872 | 3 | Analog Output 01 Failed High |
| SPN 3872 FMI 4 | 3872 | 4 | Analog Output 01 Failed Low or Open Circuit |
| SPN 3873 FMI 3 | 3873 | 3 | Analog Output 02 Failed High |
| SPN 3873 FMI 4 | 3873 | 4 | Analog Output 02 Failed Low or Open Circuit |
| SPN 3936 FMI 18 | 3936 | 18 | Diesel Particulate Filter (DPF) Pressure – Out of Range Low |
| SPN 3948 FMI 9 | 3948 | 9 | J1939 PTODE Message (PTO Drive Engagement) is Missing |
| SPN 4041 FMI 16 | 4041 | 16 | 1000 ms ECU OS Task Locked in an Endless Loop |
| SPN 4041 FMI 9 | 4041 | 9 | 20 ms ECU OS Task Timed Out Prior to Completion |
| SPN 4077 FMI 0 | 4077 | High Doser Fuel Line Pressure | |
| SPN 4077 FMI 14 | 4077 | 14 | Doser Fuel Line Pressure Failed Self-Test |
| SPN 4077 FMI 3 | 4077 | 3 | Doser Outlet Pressure Sensor Circuit Failed High |
| SPN 4077 FMI 4 | 4077 | 4 | Doser Outlet Pressure Sensor Circuit Failed Low |
| SPN 412 FMI 15 | 412 | 15 | EGR Valve Temperature Too High |
| SPN 4206 FMI 2 | 4206 | 2 | TSC1 Message Counter Indicates Lost Messages |
| SPN 4207 FMI 2 | 4207 | 2 | TSC1 Message Checksum Wrong |
| SPN 4331 FMI 15 | 4331 | 15 | DEF Dosing Quantity Low |
| SPN 4332 FMI 31 | 4332 | 31 | DOC Inlet Temperature Out of Range Low Preventing Dosing |
| SPN 4334 FMI 3 | 4334 | 3 | Diesel Exhaust Fluid Pressure Sensor Circuit Failed High |
| SPN 4334 FMI 4 | 4334 | 4 | Diesel Exhaust Fluid Pressure Sensor Circuit Failed Low |
| SPN 4354 FMI 3 | 4354 | 3 | Line Heater No. 1 Circuit Failed High |
| SPN 4354 FMI 4 | 4354 | 4 | Line Heater No. 1 Circuit Failed Low |
| SPN 4354 FMI 5 | 4354 | 5 | Line Heater No. 1 Open Circuit |
| SPN 4355 FMI 3 | 4355 | 3 | SCR Line Heater No. 2 Circuit Failed High |
| SPN 4355 FMI 4 | 4355 | 4 | SCR Line Heater No. 2 Circuit Failed Low |
| SPN 4355 FMI 5 | 4355 | 5 | SCR Line Heater No. 2 Open Circuit |
| SPN 4356 FMI 3 | 4356 | 3 | Line Heater No. 3 Circuit Failed High |
| SPN 4356 FMI 4 | 4356 | 4 | Line Heater No. 3 Circuit Failed Low |
| SPN 4356 FMI 5 | 4356 | 5 | Line Heater No. 3 Open Circuit |
| SPN 4357 FMI 3 | 4357 | 3 | Line Heater No. 4 Circuit Failed High |
| SPN 4357 FMI 4 | 4357 | 4 | Line Heater No. 4 Circuit Failed Low |
| SPN 4357 FMI 5 | 4357 | 5 | Line Heater No. 4 Open Circuit |
| SPN 4360 FMI 15 | 4360 | 15 | Selective Catalyst Reduction Inlet Temperature High |
| SPN 4360 FMI 20 | 4360 | 20 | Selective Catalyst Reduction Inlet Temperature Sensor Drift High in Range |
| SPN 4363 FMI 0 | 4363 | SCR Outlet Temperature High | |
| SPN 4363 FMI 2 | 4363 | 2 | Selective Catalyst Reduction Outlet Temperature – Not Plausible |
| SPN 4363 FMI 20 | 4363 | 20 | SCR Temperature Drift – Inlet Low / Outlet High |
| SPN 4363 FMI 3 | 4363 | 3 | Selective Catalyst Reduction Outlet Temperature Sensor Circuit Failed High |
| SPN 4363 FMI 4 | 4363 | 4 | Selective Catalyst Reduction Outlet Temperature Sensor Circuit Failed Low |
| SPN 4363 FMI 8 | 4363 | 8 | SCR Outlet Temperature Signal Spike |
| SPN 4364 FMI 1 | 4364 | 1 | SCR NOx Conversion Efficiency Very Low |
| SPN 4364 FMI 17 | 4364 | 17 | SCR NOx Conversion Efficiency |
| SPN 4374 FMI 0 | 4374 | Under Pressurized Diesel Exhaust Fluid System | |
| SPN 4374 FMI 1 | 4374 | 1 | Over Pressurized DEF System |
| SPN 4374 FMI 11 | 4374 | 11 | Diesel Exhaust Fluid PNV SRL Loop Error |
| SPN 4374 FMI 14 | 4374 | 14 | Diesel Exhaust Fluid PNV SRH Loop Error |
| SPN 4374 FMI 19 | 4374 | 19 | Diesel Exhaust Fluid System is Not Being Controlled as Expected |
| SPN 4374 FMI 3 | 4374 | 3 | Pump Speed Signal Above Measurement Range |
| SPN 4374 FMI 4 | 4374 | 4 | Diesel Exhaust Fluid (DEF) Pump Speed Signal Below Measurement Range |
| SPN 4374 FMI 9 | 4374 | 9 | Diesel Exhaust Fluid PSV Loop Error |
| SPN 4375 FMI 3 | 4375 | 3 | Diesel Exhaust Fluid Pump Circuit Failed High |
| SPN 4375 FMI 4 | 4375 | 4 | Diesel Exhaust Fluid Pump Circuit Failed Low |
| SPN 4375 FMI 5 | 4375 | 5 | Diesel Exhaust Fluid Pump Circuit Failed Open |
| SPN 4752 FMI 0 | 4752 | Exhaust Gas Recirculation Cooler Low Efficiency | |
| SPN 4752 FMI 16 | 4752 | 16 | Cooling Efficiency of the EGR Cooler Too Low |
| SPN 4765 FMI 0 | 4765 | Exhaust Temperature Out of Range High | |
| SPN 4817 FMI 16 | 4817 | 16 | Boost Wastegate Error Deviation High |
| SPN 4817 FMI 18 | 4817 | 18 | Boost Wastegate Error Deviation Low |
| SPN 5016 FMI 3 | 5016 | 3 | High Side Digital Output 4 Circuit Failed High |
| SPN 5016 FMI 4 | 5016 | 4 | High Side Digital Output 4 Circuit Failed Low |
| SPN 5017 FMI 3 | 5017 | 3 | NOx Sensor Digital Output 5 Circuit Signal Failed High |
| SPN 5017 FMI 4 | 5017 | 4 | NOx Sensor Digital Output 5 Circuit Signal Failed Low |
| SPN 5018 FMI 18 | 5018 | 18 | Diesel Oxidation Catalyst Efficiency Fault |
| SPN 513 FMI 9 | 513 | 9 | Actual Torque Signal Not Available via CAN |
| SPN 520232 FMI 9 | 520232 | 9 | NOx Mass Signal Not Available via Controller Area Network |
| SPN 520243 FMI 11 | 520243 | 11 | O₂ Sensor Controller, Internal Initialization Error |
| SPN 520243 FMI 5 | 520243 | 5 | Oxygen Sensor Ground Circuit Failed Open |
| SPN 520243 FMI 9 | 520243 | 9 | Internal Communication Error with O₂ Sensor Controller |
| SPN 520244 FMI 5 | 520244 | 5 | Oxygen Sensor Pump Circuit Failed Open |
| SPN 520245 FMI 11 | 520245 | 11 | Turbocharger Wastegate Actuator, Learn Span Too Small Range 2, Max Learn Attempts Completed |
| SPN 520245 FMI 12 | 520245 | 12 | Turbocharger Wastegate Actuator, Learn Span Too Small Range 2, Max Learn Attempts Not Completed |
| SPN 520245 FMI 14 | 520245 | 14 | Turbocharger Wastegate Actuator, Learn Span Too Small Range 3 |
| SPN 520245 FMI 31 | 520245 | 31 | Turbocharger Wastegate Actuator, Learn Cycle Incomplete |
| SPN 520245 FMI 5 | 520245 | 5 | Oxygen Sensor Trim Open Circuit |
| SPN 520251 FMI 4 | 520251 | 4 | Pressure Control Valve (PCV) High Side Error |
| SPN 520252 FMI 3 | 520252 | 3 | Pressure Control Valve (PCV) Low Side Error |
| SPN 520252 FMI 4 | 520252 | 4 | Pressure Control Valve Circuit Failed Low (PCV Low Side Short-Circuit to Ground) |
| SPN 520253 FMI 14 | 520253 | 14 | Software Reset Detected, Case C |
| SPN 520253 FMI 31 | 520253 | 31 | Software Reset Detected, Case B |
| SPN 520261 FMI 31 | 520261 | 31 | Speed Limitation Fault |
| SPN 520268 FMI 16 | 520268 | 16 | Fuel Rail Pressure Too Low, Similar Condition |
| SPN 520268 FMI 18 | 520268 | 18 | Fuel Rail Pressure Too High, Similar Condition |
| SPN 520280 FMI 7 | 520280 | 7 | Engine Brake High Inhibit Due to Improper Condition |
| SPN 520281 FMI 7 | 520281 | 7 | Engine Brake Inhibit Due to JB1 Improper Condition |
| SPN 520282 FMI 7 | 520282 | 7 | Engine Brake Inhibit Due to JB2 Improper Condition |
| SPN 520286 FMI 31 | 520286 | 31 | Software Reset Detected, Case A |
| SPN 520287 FMI 13 | 520287 | 13 | MCM Software Reset |
| SPN 520287 FMI 14 | 520287 | 14 | MCM Missing VIN |
| SPN 520287 FMI 7 | 520287 | 7 | MCM Hardware Reset |
| SPN 520295 FMI 11 | 520295 | 11 | Smart Remote Actuator 1 (Wastegate), Learn Span Too Small Range 2, Max Learn Attempts Completed |
| SPN 520295 FMI 12 | 520295 | 12 | Smart Remote Actuator 1 (Wastegate), Learn Span Too Small Range 2, Max Learn Attempts Not |
| SPN 520295 FMI 14 | 520295 | 14 | Smart Remote Actuator 1 (Wastegate), Learn Span Too Small Range 3 |
| SPN 520295 FMI 19 | 520295 | 19 | Smart Remote Actuator 1 (Wastegate), Communication Error |
| SPN 520295 FMI 31 | 520295 | 31 | Smart Remote Actuator 1 (Wastegate), Learn Cycle Incomplete |
| SPN 520321 FMI 31 | 520321 | 31 | Internal MCM Error |
| SPN 520323 FMI 3 | 520323 | 3 | High Side Digital Output Supply Voltage Circuit Failed High |
| SPN 520323 FMI 4 | 520323 | 4 | High Side Digital Output Supply Voltage Circuit Failed Low |
| SPN 520328 FMI 7 | 520328 | 7 | Diesel Exhaust Fluid System Has Been Over-Pressurized |
| SPN 520329 FMI 31 | 520329 | 31 | DEF Flow Quantity Below Normal |
| SPN 520332 FMI 17 | 520332 | 17 | Selective Catalyst Reduction (SCR) Inlet Temperature Too Low |
| SPN 520348 FMI 14 | 520348 | 14 | Soot Sensor Tube Clogged / Defect |
| SPN 520349 FMI 14 | 520349 | 14 | DPF Filtration Efficiency Low |
| SPN 520352 FMI 3 | 520352 | 3 | Supply Voltage Difference Between ACM and Soot Sensor |
| SPN 520353 FMI 17 | 520353 | 17 | Soot Sensor Temperature Rationality Failure |
| SPN 520355 FMI 14 | 520355 | 14 | NOx Outlet Sensor Does Not Support Self Diagnosis |
| SPN 520355 FMI 20 | 520355 | 20 | NOx Outlet Sensor Diagnosis Oxygen Pump Capacity High |
| SPN 520355 FMI 21 | 520355 | 21 | NOx Outlet Sensor Diagnosis Oxygen Pump Capacity Low |
| SPN 520357 FMI 15 | 520357 | 15 | Soot Sensor Printed Circuit Board Temperature High |
| SPN 520357 FMI 2 | 520357 | 2 | Soot Sensor Printed Circuit Board Temperature Rationality Check |
| SPN 520358 FMI 3 | 520358 | 3 | Soot Sensor Printed Circuit Board Temperature 2 Signal Range High |
| SPN 520358 FMI 4 | 520358 | 4 | Soot Sensor Printed Circuit Board Temperature 2 Signal Range Low |
| SPN 520359 FMI 12 | 520359 | 12 | Soot Sensor Heater Printed Circuit Board Component Failure |
| SPN 520359 FMI 3 | 520359 | 3 | Soot Sensor Heater Short Circuit to Battery |
| SPN 520359 FMI 4 | 520359 | 4 | Soot Sensor Heater Short Circuit to Ground |
| SPN 520359 FMI 5 | 520359 | 5 | Soot Sensor Heater Open Load |
| SPN 520360 FMI 15 | 520360 | 15 | Soot Sensor Probe Positive Signal Range High Diagnostic |
| SPN 520360 FMI 3 | 520360 | 3 | Soot Sensor Probe Positive Short Circuit to Battery Diagnostic |
| SPN 520360 FMI 4 | 520360 | 4 | Soot Sensor Probe Positive Short Circuit to Ground Diagnostic |
| SPN 520361 FMI 16 | 520361 | 16 | Soot Sensor Temperature High |
| SPN 520361 FMI 18 | 520361 | 18 | Soot Sensor Temperature Low |
| SPN 520361 FMI 2 | 520361 | 2 | Soot Sensor Temperature Rationality Signal Range Low |
| SPN 520362 FMI 3 | 520362 | 3 | Soot Sensor Supply Line Signal Range High |
| SPN 520362 FMI 4 | 520362 | 4 | Soot Sensor Supply Line Signal Range Low |
| SPN 520363 FMI 3 | 520363 | 3 | Selective Catalyst Reduction Inlet NOx Sensor Heater Circuit Failed High |
| SPN 520363 FMI 5 | 520363 | 5 | Selective Catalyst Reduction Inlet NOx Sensor Heater Circuit Failed Open |
| SPN 520364 FMI 3 | 520364 | 3 | Selective Catalyst Reduction Inlet NOx Sensor Control Circuit Failed High |
| SPN 520364 FMI 5 | 520364 | 5 | Selective Catalyst Reduction Inlet NOx Sensor Circuit Failed Open |
| SPN 520365 FMI 3 | 520365 | 3 | Selective Catalyst Reduction Outlet NOx Sensor Heater Circuit Failed High |
| SPN 520365 FMI 5 | 520365 | 5 | Selective Catalyst Reduction Outlet NOx Sensor Heater Circuit Failed Open |
| SPN 520366 FMI 3 | 520366 | 3 | Selective Catalyst Reduction Outlet NOx Sensor Circuit Failed High |
| SPN 520366 FMI 5 | 520366 | 5 | Selective Catalyst Reduction Outlet NOx Sensor Circuit Failed Open |
| SPN 520367 FMI 3 | 520367 | 3 | Selective Catalyst Reduction Inlet NOx Sensor Lambda 2 Circuit Failed High |
| SPN 520367 FMI 5 | 520367 | 5 | Selective Catalyst Reduction Inlet NOx Sensor Lambda 2 Circuit Failed Open |
| SPN 520368 FMI 14 | 520368 | 14 | Selective Catalyst Reduction Outlet NOx Sensor Lambda 2 Circuit Failed Open |
| SPN 520368 FMI 31 | 520368 | 31 | Selective Catalyst Reduction Outlet NOx Sensor Lambda 2 Circuit Failed High |
| SPN 520371 FMI 16 | 520371 | 16 | Selective Catalyst Reduction Closed Loop Control at Maximum Limit (Multiples Sources) |
| SPN 520372 FMI 14 | 520372 | 14 | Selective Catalyst Reduction Closed Loop Control at Maximum Limit (Timeout) |
| SPN 520372 FMI 16 | 520372 | 16 | Selective Catalyst Reduction Closed Loop Control at Maximum Limit |
| SPN 520378 FMI 0 | 520378 | Aftertreatment Temperature Not Plausible | |
| SPN 520381 FMI 2 | 520381 | 2 | DOC Inlet Temperature Not Plausible |
| SPN 520 FMI 1 | 520 | 1 | Engine Brake Malfunction |
| SPN 520 FMI 18 | 520 | 18 | Reduced Engine Brake Power |
| SPN 521005 FMI 3 | 521005 | 3 | MCM Internal Temperature Voltage Failed High |
| SPN 521005 FMI 4 | 521005 | 4 | MCM Internal Temperature Voltage Failed Low |
| SPN 521012 FMI 1 | 521012 | 1 | Fault Reaction Manager – Intake Manifold Pressure Too Low |
| SPN 521018 FMI 0 | 521018 | Group 1 Sensors Not Plausible | |
| SPN 521019 FMI 0 | 521019 | Group 2 Sensors Not Plausible | |
| SPN 521020 FMI 0 | 521020 | Group 3 Sensors Not Plausible | |
| SPN 521022 FMI 31 | 521022 | 31 | Nozzle Begin Data 1 Out of Range |
| SPN 521024 FMI 31 | 521024 | 31 | Current Duration Trim Data Out of Range |
| SPN 521046 FMI 31 | 521046 | 31 | Gear Box is Configured Incorrectly |
| SPN 521049 FMI 31 | 521049 | 31 | DEF Inducement DEF Lamp Active |
| SPN 521050 FMI 31 | 521050 | 31 | DEF Inducement SEL Lamp Active |
| SPN 521052 FMI 31 | 521052 | 31 | DEF Inducement CEL Lamp Active |
| SPN 521075 FMI 3 | 521075 | 3 | Injector Push Error for Post or Pilot Injections on Cylinder No. 1 |
| SPN 521075 FMI 4 | 521075 | 4 | Injector Push Error for Post or Pilot Injections on Cylinder No. 1 |
| SPN 521076 FMI 3 | 521076 | 3 | Injector Push Error for Post or Pilot Injections on Cylinder No. 2 |
| SPN 521076 FMI 4 | 521076 | 4 | Injector Push Error for Post or Pilot Injections on Cylinder No. 2 |
| SPN 521077 FMI 3 | 521077 | 3 | Injector Push Error for Post or Pilot Injections on Cylinder No. 3 |
| SPN 521077 FMI 4 | 521077 | 4 | Injector Push Error for Post or Pilot Injections on Cylinder No. 3 |
| SPN 521078 FMI 3 | 521078 | 3 | Injector Push Error for Post or Pilot Injections on Cylinder No. 4 |
| SPN 521078 FMI 4 | 521078 | 4 | Injector Push Error for Post or Pilot Injections on Cylinder No. 4 |
| SPN 521098 FMI 10 | 521098 | 10 | O₂ Sensor Slow Response |
| SPN 521098 FMI 11 | 521098 | 11 | O₂ Sensor Slow Response |
| SPN 521100 FMI 31 | 521100 | 31 | EGR Position Deviation Cold Condition |
| SPN 521101 FMI 31 | 521101 | 31 | VCP Position Deviation Cold Condition |
| SPN 521103 FMI 31 | 521103 | 31 | Excessive Time to Enable Closed Loop EGR |
| SPN 521104 FMI 31 | 521104 | 31 | Cold Start Emission Reduction Strategy Has Detected a Fault in VCP Logic |
| SPN 521133 FMI 13 | 521133 | 13 | ACM Reported Ash Mileage is Lower than the MCM Stored Value |
| SPN 523 FMI 13 | 523 | 13 | J1939 Transmission Current Gear Signal is Missing or Not Available |
| SPN 523 FMI 13 | 523 | 13 | J1939 Transmission Current Gear Signal is Missing |
| SPN 523 FMI 19 | 523 | 19 | J1939 Transmission Current Gear Signal is Erratic |
| SPN 523 FMI 19 | 523 | 19 | J1939 Transmission Current Gear Signal is Erratic |
| SPN 524275 FMI 19 | 524275 | 19 | RCM Message Not Received or Stopped Arriving |
| SPN 524276 FMI 13 | 524276 | 13 | MCM Fuel Map to GVC Emission Standard Calibration (02/24) Mismatched |
| SPN 524277 FMI 13 | 524277 | 13 | Super Structure Cabin Mode ENABLE State ERROR |
| SPN 524277 FMI 14 | 524277 | 14 | Driving from Superstructure IMPLAUSIBLE Condition |
| SPN 524277 FMI 19 | 524277 | 19 | Super Structure Cabin Mode DISABLE State ERROR |
| SPN 524278 FMI 13 | 524278 | 13 | 2-Channel Accelerator Pedal Signal 1 Missing |
| SPN 524278 FMI 14 | 524278 | 14 | 2-Channel Accelerator Pedal Signal 2 Missing |
| SPN 524278 FMI 15 | 524278 | 15 | Accelerator Pedal “In-Range” Fault |
| SPN 524279 FMI 11 | 524279 | 11 | Expansion Pressure Tank Pressure Set Fault |
| SPN 524279 FMI 18 | 524279 | 18 | Expansion Pressure Tank Pressure Loss |
| SPN 524279 FMI 2 | 524279 | 2 | Expansion Tank Pressure Sensor Data Erratic |
| SPN 524279 FMI 3 | 524279 | 3 | Expansion Tank Pressure Sensor Voltage Failed High |
| SPN 524279 FMI 4 | 524279 | 4 | Expansion Tank Pressure Sensor Voltage Failed Low |
| SPN 524280 FMI 2 | 524280 | 2 | Remote Idle Validation Switch Inputs Reversed |
| SPN 524280 FMI 3 | 524280 | 3 | Remote Accelerator Pedal Idle Validation Switch 1 Circuit Failed High |
| SPN 524280 FMI 4 | 524280 | 4 | Remote Accelerator Pedal Idle Validation Switch 1 Circuit Failed Low |
| SPN 524280 FMI 5 | 524280 | 5 | Remote Accelerator Pedal Idle Validation Switch 2 Circuit Failed Low |
| SPN 524280 FMI 6 | 524280 | 6 | Remote Accelerator Pedal Idle Validation Switch 2 Circuit Failed High |
| SPN 524281 FMI 9 | 524281 | 9 | J1939 Powertrain Message (Engine Droop Control) is Missing |
| SPN 524283 FMI 14 | 524283 | 14 | Alternator Speed to Engine Speed Mismatch |
| SPN 524283 FMI 2 | 524283 | 2 | Alternator Speed Signal Available but Erratic |
| SPN 524284 FMI 14 | 524284 | 14 | PMC Level 2 Fault |
| SPN 524284 FMI 19 | 524284 | 19 | PMC Level 3 General Protection Fault |
| SPN 524285 FMI 4 | 524285 | 4 | CM1 DPF Regeneration Switch Short Circuit to Ground |
| SPN 524287 FMI 1 | 524287 | 1 | Evobus Cruise Control Lever Position Not Plausible |
| SPN 524287 FMI 19 | 524287 | 19 | Predictive Cruise Control Device Reporting Error |
| SPN 524287 FMI 9 | 524287 | 9 | Predictive Cruise Control Message Not Received |
| SPN 524 FMI 9 | 524 | 9 | J1939 ETC2 Message is Missing |
| SPN 527 FMI 9 | 527 | 9 | J1939 Cruise Control Vehicle Speed (CCVS) Message from Source No. 1, No. 2, or No. 3 Missing |
| SPN 5298 FMI 14 | 5298 | 14 | Selective Catalytic Reduction Catalyst Abnormal Temperature Rise |
| SPN 5323 FMI 13 | 5323 | 13 | Excessive Time to Enter Closed Loop Fuel Pressure Control |
| SPN 5357 FMI 15 | 5357 | 15 | Over Fueling Detected by Lambda Deviation Monitor |
| SPN 5357 FMI 17 | 5357 | 17 | Under Fueling Detected by Lambda Deviation Monitor |
| SPN 5358 FMI 16 | 5358 | 16 | Engine Smoothness Control / Cylinder No. 1 Quantity Deficit |
| SPN 5358 FMI 18 | 5358 | 18 | Engine Smoothness Control / Cylinder No. 1 Quantity Excess |
| SPN 5359 FMI 16 | 5359 | 16 | Engine Smoothness Control / Cylinder No. 2 Quantity Deficit |
| SPN 5359 FMI 18 | 5359 | 18 | Engine Smoothness Control / Cylinder No. 2 Quantity Excess |
| SPN 5360 FMI 16 | 5360 | 16 | Engine Smoothness Control / Cylinder No. 3 Quantity Deficit |
| SPN 5360 FMI 18 | 5360 | 18 | Engine Smoothness Control / Cylinder No. 3 Quantity Excess |
| SPN 5361 FMI 16 | 5361 | 16 | Engine Smoothness Control / Cylinder No. 4 Quantity Deficit |
| SPN 5361 FMI 18 | 5361 | 18 | Engine Smoothness Control / Cylinder No. 4 Quantity Excess |
| SPN 5395 FMI 15 | 5395 | 15 | Idle Fuel Quantity Out of Range |
| SPN 5397 FMI 31 | 5397 | 31 | Regen Frequency Error |
| SPN 5418 FMI 3 | 5418 | 3 | Quantity Control Valve High Side Error |
| SPN 5418 FMI 4 | 5418 | 4 | Quantity Control Valve Low Side Error |
| SPN 5421 FMI 9 | 5421 | 9 | Lost Communication with SRA1 – Wastegate |
| SPN 5435 FMI 11 | 5435 | 11 | Diesel Exhaust Fluid Pump Block Loop Error |
| SPN 5435 FMI 7 | 5435 | 7 | Non Diesel Exhaust Fluid Flow Situation |
| SPN 5443 FMI 0 | 5443 | DPF HC Absorption Very High | |
| SPN 5443 FMI 15 | 5443 | 15 | DPF HC Absorption Warning |
| SPN 5443 FMI 16 | 5443 | 16 | DPF HC Absorption High |
| SPN 5488 FMI 3 | 5488 | 3 | Diesel Exhaust Fluid Line Heater 5 Circuit Failed High |
| SPN 5488 FMI 4 | 5488 | 4 | Diesel Exhaust Fluid Line Heater 5 Circuit Failed Low |
| SPN 5488 FMI 5 | 5488 | 5 | Selective Catalyst Reduction Line Heater No. 5 Circuit Failed Open |
| SPN 5503 FMI 13 | 5503 | 13 | Fuel Mass Signal Not Available via Controller Area Network |
| SPN 5540 FMI 2 | 5540 | 2 | Fuel Temperature Signal Not Plausible |
| SPN 5569 FMI 3 | 5569 | 3 | Soot Sensor Printed Circuit Board Temperature 1 Signal Range High |
| SPN 5569 FMI 4 | 5569 | 4 | Soot Sensor Printed Circuit Board Temperature 1 Signal Range Low |
| SPN 556 FMI 9 | 556 | 9 | J1939 RC Message From Transmission Retarder is Missing |
| SPN 5571 FMI 5 | 5571 | 5 | PCV Current Too Low |
| SPN 5571 FMI 6 | 5571 | 6 | PCV Current Deviation Too High |
| SPN 5588 FMI 14 | 5588 | 14 | CPC Bus-OFF Fault for CHCAN |
| SPN 5588 FMI 9 | 5588 | 9 | CAN3 Communication Error |
| SPN 558 FMI 2 | 558 | 2 | Idle Validation Switch Inputs Reversed |
| SPN 558 FMI 3 | 558 | 3 | Idle Validation Switch 1 Circuit Failed High |
| SPN 558 FMI 4 | 558 | 4 | Idle Validation Switch 1 Circuit Failed Low |
| SPN 558 FMI 5 | 558 | 5 | Idle Validation Switch 2 Circuit Failed Low |
| SPN 558 FMI 6 | 558 | 6 | Idle Validation Switch 2 Circuit Failed High |
| SPN 569 FMI 9 | 569 | 9 | J1939 EAC1 Message (Electronic Axle Controller 1) is Missing |
| SPN 5713 FMI 20 | 5713 | 20 | NOx Outlet Sensor Self-Diagnosis NOx Drifted High |
| SPN 5713 FMI 21 | 5713 | 21 | NOx Outlet Sensor Self-Diagnosis NOx Drifted Low |
| SPN 5714 FMI 20 | 5714 | 20 | NOx Raw Sensor Self-Diagnosis NOx Drifted High |
| SPN 5714 FMI 21 | 5714 | 21 | NOx Raw Sensor Self-Diagnosis NOx Drifted Low |
| SPN 571 FMI 4 | 571 | 4 | Engine Brake Disable Push-Button Shorted to Ground or Pressed Too Long |
| SPN 5741 FMI 12 | 5741 | 12 | Soot Sensor Inter-Digital Electrode Self-Diagnostic |
| SPN 5741 FMI 13 | 5741 | 13 | Soot Sensor Controller Area Network Signal Missing |
| SPN 5741 FMI 16 | 5741 | 16 | Soot Sensor Data Valid But Above Normal Operating Range – Moderately Severe Level |
| SPN 5741 FMI 18 | 5741 | 18 | Soot Sensor Data Valid But Below Normal Operating Range – Moderately Severe Level |
| SPN 5741 FMI 4 | 5741 | 4 | Soot Sensor Probe Short Circuit |
| SPN 5741 FMI 9 | 5741 | 9 | Soot Sensor Communication Error |
| SPN 5747 FMI 12 | 5747 | 12 | Soot Sensor Heater Fault |
| SPN 5841 FMI 14 | 5841 | 14 | Diesel Exhaust Fluid Quality Low |
| SPN 5928 FMI 14 | 5928 | 14 | H Bridge 2 EGR Valve Circuit Open Load |
| SPN 5928 FMI 3 | 5928 | 3 | H Bridge 2 EGR Valve Circuit Shorted to Battery |
| SPN 5928 FMI 4 | 5928 | 4 | H Bridge 2 EGR Valve Circuit Shorted to Ground |
| SPN 5928 FMI 5 | 5928 | 5 | H Bridge 2 EGR Valve Short-Circuit / Over Current |
| SPN 596 FMI 13 | 596 | 13 | J1939 Cruise Control Enable Switch Signal from Source No. 1, No. 2, or No. 3 Missing or Not Available |
| SPN 596 FMI 19 | 596 | 19 | J1939 Cruise Control Enable Switch Signal From Source No. 1, No. 2, or No. 3 Erratic |
| SPN 597 FMI 13 | 597 | 13 | J1939 Service Brake Switch Signal From Source No. 1, No. 2, or No. 3 is Missing |
| SPN 597 FMI 19 | 597 | 19 | J1939 Service Brake Switch Signal From Source No. 1, No. 2, or No. 3 Erratic |
| SPN 597 FMI 2 | 597 | 2 | Service Brake Status Not Plausible |
| SPN 598 FMI 2 | 598 | 2 | Clutch Switch Status Not Plausible |
| SPN 599 FMI 4 | 599 | 4 | Cruise Control SET and RESUME Circuits Failed Low |
| SPN 600 FMI 13 | 600 | 13 | J1939 Cruise Control Coast Switch Signal From Source No. 1, No. 2, or No. 3 is Missing or Not Available |
| SPN 600 FMI 19 | 600 | 19 | J1939 Cruise Control Coast Switch Signal From Source No. 1, No. 2, or No. 3 is Erratic |
| SPN 602 FMI 13 | 602 | 13 | J1939 Cruise Control Accelerate Switch Signal From Source No. 1, No. 2, or No. 3 is Missing or Not Available |
| SPN 602 FMI 19 | 602 | 19 | J1939 Cruise Control Accelerate Switch Signal From Source No. 1, No. 2, or No. 3 is Erratic |
| SPN 609 FMI 12 | 609 | 12 | CPC Hardware Failure |
| SPN 609 FMI 13 | 609 | 13 | CPC Software Diagnostics |
| SPN 609 FMI 16 | 609 | 16 | Internal Temperature of CPC4 Too High |
| SPN 625 FMI 13 | 625 | 13 | TCM System IDs Not Received or Stopped Arriving |
| SPN 625 FMI 14 | 625 | 14 | PTCAN – MCM System ID/MCM_C01 Not Received or Stopped Arriving |
| SPN 625 FMI 2 | 625 | 2 | PTCAN Incorrect MCM System ID Received |
| SPN 625 FMI 2 | 625 | 2 | CPC Message Not Received or Has Stopped Arriving |
| SPN 625 FMI 2 | 625 | 2 | PTCAN Incorrect MCM System ID Received |
| SPN 625 FMI 4 | 625 | 4 | ECAN Link Circuit Failure |
| SPN 625 FMI 8 | 625 | 8 | MCM PT-CAN DM1 Message Not Received or Has Stopped Arriving |
| SPN 625 FMI 9 | 625 | 9 | ACM PTCAN DM1 Message Not Received or has Stopped Arriving |
| SPN 625 FMI 9 | 625 | 9 | PTCAN Heartbeat Missing |
| SPN 625 FMI 9 | 625 | 9 | Aftertreatment Control Module PT-CAN DM1 Message Not Received or Has Stopped Arriving |
| SPN 628 FMI 12 | 628 | 12 | EEPROM Checksum Failure for the SCR Block |
| SPN 628 FMI 14 | 628 | 14 | XFLASH Static Fault Code Memory Page Read Write Failure |
| SPN 628 FMI 17 | 628 | 17 | 1000 ms ECU OS Task Timed Out Prior to Completion |
| SPN 628 FMI 2 | 628 | 2 | EEPROM Checksum Failure |
| SPN 629 FMI 12 | 629 | 12 | DDEC Data XFLASH Write Error |
| SPN 629 FMI 2 | 629 | 2 | CPC Hardware / Software Mismatch |
| SPN 630 FMI 13 | 630 | 13 | SCR Number Out of Range |
| SPN 636 FMI 1 | 636 | 1 | Crankshaft Position Sensor Short to Ground |
| SPN 636 FMI 10 | 636 | 10 | Crankshaft Position Sensor Signal Erratic |
| SPN 636 FMI 11 | 636 | 11 | Crankshaft Position Sensor Failure |
| SPN 636 FMI 15 | 636 | 15 | Timing Offset Between Cam and Crankshaft |
| SPN 636 FMI 2 | 636 | 2 | No Match of Camshaft and Crankshaft Signals |
| SPN 636 FMI 3 | 636 | 3 | Crankshaft Position Sensor Open Circuit |
| SPN 636 FMI 8 | 636 | 8 | Crankshaft Position Sensor Time Out |
| SPN 639 FMI 13 | 639 | 13 | HDMS Fan is Configured and the J1939 Message Was Not Received or Has Stopped Arriving |
| SPN 639 FMI 14 | 639 | 14 | J1939 Data Link Failure |
| SPN 639 FMI 14 | 639 | 14 | J1939 Data Link Failure |
| SPN 639 FMI 9 | 639 | 9 | J1939 PROP11 Message is Missing |
| SPN 647 FMI 3 | 647 | 3 | Fan Circuit Short to Power |
| SPN 647 FMI 4 | 647 | 4 | Fan Circuit Short to Ground |
| SPN 647 FMI 5 | 647 | 5 | Fan Open Circuit |
| SPN 65193 FMI 16 | 65193 | 16 | Expected Lambda Value is Too High |
| SPN 65193 FMI 18 | 65193 | 18 | Expected Lambda Value is Too Low |
| SPN 651 FMI 3 | 651 | 3 | Injector Cylinder No. 1 Needle Control Valve Abnormal Operation (MAX) |
| SPN 651 FMI 4 | 651 | 4 | Injector Cylinder No. 1 Needle Control Valve Abnormal Operation (MIN) |
| SPN 651 FMI 5 | 651 | 5 | Injector Cylinder No. 1, Needle Control Valve Circuit Open |
| SPN 651 FMI 6 | 651 | 6 | Injector Cylinder No. 1 Needle Control Valve, Valve Shorted Circuit |
| SPN 652 FMI 3 | 652 | 3 | Injector Cylinder No. 2 Needle Control Valve Abnormal Operation (MAX) |
| SPN 652 FMI 4 | 652 | 4 | Injector Cylinder No. 2 Needle Control Valve Abnormal Operation (MIN) |
| SPN 652 FMI 5 | 652 | 5 | Injector Cylinder No. 2, Needle Control Valve Circuit Open |
| SPN 652 FMI 6 | 652 | 6 | Injector Cylinder No. 2 Needle Control Valve, Valve Shorted Circuit |
| SPN 653 FMI 3 | 653 | 3 | Injector Cylinder No. 3 Needle Control Valve Abnormal Operation (MAX) |
| SPN 653 FMI 4 | 653 | 4 | Injector Cylinder No. 3 Needle Control Valve Abnormal Operation (MIN) |
| SPN 653 FMI 5 | 653 | 5 | Injector Cylinder No. 3, Needle Control Valve Circuit Open |
| SPN 653 FMI 6 | 653 | 6 | Injector Cylinder No. 3 Needle Control Valve, Valve Shorted Circuit |
| SPN 654 FMI 3 | 654 | 3 | Injector Cylinder No. 4 Needle Control Valve Abnormal Operation (MAX) |
| SPN 654 FMI 4 | 654 | 4 | Injector Cylinder No. 4 Needle Control Valve Abnormal Operation (MIN) |
| SPN 654 FMI 5 | 654 | 5 | Injector Cylinder No. 4, Needle Control Valve Circuit Open |
| SPN 654 FMI 6 | 654 | 6 | Injector Cylinder No. 4 Needle Control Valve, Valve Shorted Circuit |
| SPN 667 FMI 3 | 667 | 3 | Starter Pin 1 18 Circuit Failed High |
| SPN 677 FMI 2 | 677 | 2 | Starter Switch Inconsistent |
| SPN 677 FMI 3 | 677 | 3 | Engine Starter Relay Shorted to High Source |
| SPN 677 FMI 4 | 677 | 4 | Engine Starter Relay Circuit Failed Low |
| SPN 677 FMI 7 | 677 | 7 | Starter Switch Inconsistent |
| SPN 701 FMI 3 | 701 | 3 | Digital Output 3 07 Circuit Failed High |
| SPN 701 FMI 4 | 701 | 4 | Digital Output 3 07 Circuit Failed Low |
| SPN 701 FMI 5 | 701 | 5 | Digital Output 3 07 Circuit Open |
| SPN 702 FMI 3 | 702 | 3 | Digital Output 3 08 Circuit Failed High |
| SPN 702 FMI 4 | 702 | 4 | Digital Output 3 08 Circuit Failed Low |
| SPN 702 FMI 5 | 702 | 5 | Digital Output 3 08 Circuit Open |
| SPN 703 FMI 3 | 703 | 3 | Digital Output 3 09 Circuit Failed High |
| SPN 703 FMI 4 | 703 | 4 | Digital Output 3 09 Circuit Failed Low |
| SPN 703 FMI 5 | 703 | 5 | Digital Output 3 09 Circuit Open |
| SPN 704 FMI 3 | 704 | 3 | Digital Output 4 07 Circuit Failed High |
| SPN 704 FMI 4 | 704 | 4 | Digital Output 4 07 Circuit Failed Low |
| SPN 704 FMI 5 | 704 | 5 | Digital Output 4 07 Circuit Open |
| SPN 705 FMI 3 | 705 | 3 | Digital Output 1 13 Circuit Failed High |
| SPN 705 FMI 3 | 705 | 3 | Digital Output 1 13 Circuit Failed High |
| SPN 705 FMI 4 | 705 | 4 | Digital Output 1 13 Circuit Failed Low |
| SPN 705 FMI 4 | 705 | 4 | Digital Output 1 13 Circuit Failed Low |
| SPN 705 FMI 5 | 705 | 5 | Digital Output 1 13 Circuit Open |
| SPN 706 FMI 3 | 706 | 3 | Digital Output 3 10 Circuit Failed High |
| SPN 706 FMI 4 | 706 | 4 | Digital Output 3 10 Circuit Failed Low |
| SPN 706 FMI 5 | 706 | 5 | Digital Output 3 10 Circuit Open |
| SPN 707 FMI 3 | 707 | 3 | Digital Output 2 10 Circuit Failed High |
| SPN 707 FMI 4 | 707 | 4 | Digital Output 2 10 Circuit Failed Low |
| SPN 707 FMI 5 | 707 | 5 | Digital Output 2 10 Circuit Open |
| SPN 708 FMI 3 | 708 | 3 | Digital Output 3 12 Circuit Failed High |
| SPN 708 FMI 4 | 708 | 4 | Digital Output 3 12 Circuit Failed Low |
| SPN 708 FMI 5 | 708 | 5 | Digital Output 3 12 Circuit Open |
| SPN 709 FMI 3 | 709 | 3 | Digital Output 3 16 Circuit Failed High |
| SPN 709 FMI 4 | 709 | 4 | Digital Output 3 16 Circuit Failed Low |
| SPN 709 FMI 5 | 709 | 5 | Digital Output 3 16 Circuit Open |
| SPN 70 FMI 13 | 70 | 13 | J1939 Park Brake Switch Signal from Source No. 1, No. 2, or No. 3 is Missing |
| SPN 70 FMI 19 | 70 | 19 | J1939 Park Brake Switch Signal from Source No. 1, No. 2, or No. 3 is Erratic |
| SPN 70 FMI 2 | 70 | 2 | J1939 Park Brake Switch Signal from Source No. 1, No. 2, or No. 3 Data Erratic, Intermittent or Incorrect |
| SPN 710 FMI 3 | 710 | 3 | Digital Output 4 06 Circuit Failed High |
| SPN 710 FMI 3 | 710 | 3 | Digital Output 4 06 Circuit Failed High |
| SPN 710 FMI 4 | 710 | 4 | Digital Output 4 06 Circuit Failed Low |
| SPN 710 FMI 4 | 710 | 4 | Digital Output 4 06 Circuit Failed Low |
| SPN 710 FMI 5 | 710 | 5 | Digital Output 4 06 Circuit Open |
| SPN 711 FMI 3 | 711 | 3 | Digital Output 1 05 Circuit Failed High |
| SPN 711 FMI 4 | 711 | 4 | Digital Output 1 05 Circuit Failed Low |
| SPN 711 FMI 5 | 711 | 5 | Digital Output 1 05 Circuit Open |
| SPN 712 FMI 3 | 712 | 3 | Digital Output 1 04 Circuit Failed High |
| SPN 712 FMI 4 | 712 | 4 | Digital Output 1 04 Circuit Failed Low |
| SPN 712 FMI 5 | 712 | 5 | Digital Output 1 04 Circuit Open |
| SPN 713 FMI 7 | 713 | 7 | Digital Output 3 07 Failure |
| SPN 714 FMI 3 | 714 | 3 | Digital Output 4 10 Circuit Failed High |
| SPN 714 FMI 4 | 714 | 4 | Digital Output 4 10 Circuit Failed Low |
| SPN 714 FMI 5 | 714 | 5 | Digital Output 4 10 Circuit Open |
| SPN 715 FMI 3 | 715 | 3 | Digital Output 4 12 Circuit Failed High |
| SPN 715 FMI 4 | 715 | 4 | Digital Output 4 12 Circuit Failed Low |
| SPN 715 FMI 5 | 715 | 5 | Digital Output 4 12 Circuit Open |
| SPN 716 FMI 3 | 716 | 3 | Digital Output 1 09 Circuit Failed High |
| SPN 716 FMI 4 | 716 | 4 | Digital Output 1 09 Circuit Failed Low |
| SPN 716 FMI 5 | 716 | 5 | Digital Output 1 09 Circuit Open |
| SPN 723 FMI 10 | 723 | 10 | Camshaft Position Sensor Signal Erratic |
| SPN 723 FMI 11 | 723 | 11 | Camshaft Position Sensor Failure |
| SPN 723 FMI 31 | 723 | 31 | Backwards Running Engine Detected |
| SPN 723 FMI 8 | 723 | 8 | Camshaft Position Sensor Time Out |
| SPN 724 FMI 11 | 724 | 11 | O₂ Sensor, Offset Compensation Failed |
| SPN 724 FMI 14 | 724 | 14 | O₂ Sensor, Pumping Current Limited |
| SPN 724 FMI 2 | 724 | 2 | O₂ Sensor Heater Control Circuit, Overload (Current Too High) |
| SPN 724 FMI 3 | 724 | 3 | O₂ Sensor Heater Low Side Circuit Shorted to Power |
| SPN 724 FMI 31 | 724 | 31 | O₂ Sensor, Pumping Voltage Limited |
| SPN 724 FMI 4 | 724 | 4 | O₂ Sensor Heater Low Side Circuit Shorted to Ground |
| SPN 724 FMI 5 | 724 | 5 | O₂ Sensor Heater Control Open Circuit |
| SPN 724 FMI 6 | 724 | 6 | O₂ Sensor Heater Control Circuit, Overload (Current Too High) |
| SPN 7384 FMI 3 | 7384 | 3 | Injector Cylinder No. 1 Needle Control Valve, Abnormal Operation (MAX) Cold |
| SPN 7384 FMI 4 | 7384 | 4 | Injector Cylinder No. 1 Needle Control Valve, Abnormal Operation (MIN) Cold |
| SPN 7385 FMI 3 | 7385 | 3 | Injector Cylinder No. 2 Needle Control Valve, Abnormal Operation (MAX) Cold |
| SPN 7385 FMI 4 | 7385 | 4 | Injector Cylinder No. 2 Needle Control Valve, Abnormal Operation (MIN) Cold |
| SPN 7386 FMI 3 | 7386 | 3 | Injector Cylinder No. 3 Needle Control Valve, Abnormal Operation (MAX) Cold |
| SPN 7386 FMI 4 | 7386 | 4 | Injector Cylinder No. 3 Needle Control Valve, Abnormal Operation (MIN) Cold |
| SPN 7387 FMI 3 | 7387 | 3 | Injector Cylinder No. 4 Needle Control Valve, Abnormal Operation (MAX) Cold |
| SPN 7387 FMI 4 | 7387 | 4 | Injector Cylinder No. 4 Needle Control Valve, Abnormal Operation (MIN) Cold |
| SPN 84 FMI 0 | 84 | Vehicle Speed Above Programmable Threshold 1 While Driving | |
| SPN 84 FMI 11 | 84 | 11 | Vehicle Speed Above Programmable Threshold 2 While Driving |
| SPN 84 FMI 13 | 84 | 13 | Vehicle Speed Over PTCAN SNA |
| SPN 84 FMI 13 | 84 | 13 | Vehicle Speed Over PTCAN SNA |
| SPN 84 FMI 14 | 84 | 14 | J1939 Wheel-based Vehicle Speed Signal from Source No. 3 is Missing |
| SPN 84 FMI 19 | 84 | 19 | Vehicle Speed Value Outside the Allowable Range |
| SPN 84 FMI 19 | 84 | 19 | J1939 Wheel-based Vehicle Speed Signal from Source No. 1, No. 2, or No. 3 is Erratic |
| SPN 84 FMI 2 | 84 | 2 | Vehicle Speed Signal Lost |
| SPN 84 FMI 20 | 84 | 20 | Vehicle Speed Sensor Erratic |
| SPN 84 FMI 21 | 84 | 21 | Vehicle Speed Sensor Erratic |
| SPN 84 FMI 21 | 84 | 21 | Vehicle Speed Sensor Erratic |
| SPN 84 FMI 3 | 84 | 3 | Vehicle Speed Sensor Open Circuit |
| SPN 84 FMI 4 | 84 | 4 | Vehicle Speed Sensor Circuit Failed Low |
| SPN 84 FMI 5 | 84 | 5 | Vehicle Speed Sensor Open Circuit |
| SPN 84 FMI 6 | 84 | 6 | Vehicle Speed Sensor Anti-Tamper Detection via Antilock Brake System Vehicle Speed Comparison |
| SPN 84 FMI 7 | 84 | 7 | Vehicle Speed Signal Hall Effect VSS Wiring Mismatch, Rationality Fault |
| SPN 904 FMI 13 | 904 | 13 | J1939 Front Axle Speed Signal is Missing or Not Available + Anti Tamper Enabled |
| SPN 904 FMI 19 | 904 | 19 | J1939 Front Axle Speed Signal is Erratic + Anti Tamper Enabled |
| SPN 904 FMI 9 | 904 | 9 | J1939 EBC2 Message From ABS is Missing |
| SPN 91 FMI 0 | 91 | Accelerator Pedal Circuit Failed High | |
| SPN 91 FMI 10 | 91 | 10 | Throttle Pedal Rationality Check Failed |
| SPN 91 FMI 13 | 91 | 13 | J1939 EEC2 Message is Missing or Not Available |
| SPN 91 FMI 14 | 91 | 14 | 2-Channel Accelerator Pedal Not Learned |
| SPN 91 FMI 2 | 91 | 2 | Accelerator Pedal Learn Error |
| SPN 91 FMI 31 | 91 | 31 | 2-Channel Accelerator Pedal Learned Range to Large |
| SPN 91 FMI 4 | 91 | 4 | Accelerator Pedal Circuit Failed Low |
| SPN 91 FMI 7 | 91 | 7 | 2-Channel Accelerator Pedal Idle Not Recognized |
| SPN 91 FMI 8 | 91 | 8 | 2-Channel Accelerator Pedal Signal 1 Missing |
| SPN 924 FMI 3 | 924 | 3 | Digital Output 4 09 Circuit Failed High |
| SPN 924 FMI 4 | 924 | 4 | Digital Output 4 09 Circuit Failed Low |
| SPN 924 FMI 5 | 924 | 5 | Digital Output 4 09 Circuit Open |
| SPN 925 FMI 3 | 925 | 3 | Digital Output 3 17 Circuit Failed High |
| SPN 925 FMI 4 | 925 | 4 | Digital Output 3 17 Circuit Failed Low |
| SPN 925 FMI 5 | 925 | 5 | Digital Output 3 17 Circuit Open |
| SPN 926 FMI 3 | 926 | 3 | Digital Output 4 01 Circuit Failed High |
| SPN 926 FMI 4 | 926 | 4 | Digital Output 4 01 Circuit Failed Low |
| SPN 926 FMI 5 | 926 | 5 | Digital Output 4 01 Circuit Open |
| SPN 94 FMI 15 | 94 | 15 | Fuel Filter Service Warning |
| SPN 94 FMI 16 | 94 | 16 | Fuel Filter Replacement Required |
| SPN 94 FMI 2 | 94 | 2 | Low Side Fuel Pressure Not Plausible |
| SPN 94 FMI 3 | 94 | 3 | Low Pressure Pump Output Sensor Circuit Failed High |
| SPN 94 FMI 4 | 94 | 4 | Low Pressure Pump Output Sensor Circuit Failed Low |
| SPN 961 FMI 2 | 961 | 2 | CPC Clock Data Invalid |
| SPN 96 FMI 13 | 96 | 13 | Fuel Level Sensor Missing or Not Available |
| SPN 96 FMI 13 | 96 | 13 | Fuel Level Sensor Received Network Data in Error |
| SPN 96 FMI 19 | 96 | 19 | Fuel Level Sensor Signal Error |
| SPN 96 FMI 19 | 96 | 19 | Fuel Level Sensor Missing or Not Available |
| SPN 96 FMI 2 | 96 | 2 | Fuel Tank Level Sensor Stuck in Position |
| SPN 970 FMI 3 | 970 | 3 | Engine Aux Shutdown Input Failed High |
| SPN 970 FMI 4 | 970 | 4 | Engine Aux. Shutdown Input Failed Low |
| SPN 972 FMI 2 | 972 | 2 | Throttle Inhibit Switch Signal Not Plausible Due to Excess Vehicle Speed |
| SPN 973 FMI 13 | 973 | 13 | J1939 Engine Retarder Selection Signal Missing or Not Available |
| SPN 973 FMI 19 | 973 | 19 | J1939 Engine Retarder Selection Signal Erratic |
| SPN 973 FMI 2 | 973 | 2 | Evobus Retarder Lever Position Not Plausible |
| SPN 973 FMI 9 | 973 | 9 | J1939 EBC1 Message is Missing |
| SPN 974 FMI 2 | 974 | 2 | Remote Accelerator Pedal Supply Voltage Out of Range |
| SPN 974 FMI 3 | 974 | 3 | Remote Accelerator Pedal Circuit Failed High |
| SPN 974 FMI 4 | 974 | 4 | Remote Accelerator Pedal Circuit Failed Low |
| SPN 979 FMI 9 | 979 | 9 | J1939 PTO Message Not Received this Ignition Cycle |
| SPN 97 FMI 14 | 97 | 14 | Water-in-Fuel Warning |
| SPN 97 FMI 15 | 97 | 15 | Water-in-Fuel Warning |
| SPN 97 FMI 16 | 97 | 16 | Water-in-Fuel Warning |
| SPN 97 FMI 3 | 97 | 3 | Water-in-Fuel Circuit Failed High |
| SPN 97 FMI 31 | 97 | 31 | Water-in-Fuel Warning – Ignored |
| SPN 97 FMI 4 | 97 | 4 | Water-in-Fuel Circuit Failed High |
| SPN 986 FMI 13 | 986 | 13 | J1939 CM1 SPN 986 Signal from Source No. 1 or No. 2 is Missing |
| SPN 986 FMI 19 | 986 | 19 | J1939 CM1 SPN 986 Signal from Source No. 1 or No. 2 is Erratic |
| SPN 986 FMI 9 | 986 | 9 | J1939 CM1 Message is Missing |
| SPN 98 FMI 0 | 98 | Oil Level High | |
| SPN 98 FMI 1 | 98 | 1 | Oil Level Very Low |
| SPN 98 FMI 18 | 98 | 18 | Low Engine Oil Level |
Need More Help?
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Visit our Detroit Diesel Fault Codes page for more information, or contact us for professional assistance.
By understanding your Detroit Diesel DD5 (2017-2020) fault codes, you can avoid unnecessary downtime and costly repairs. Stay ahead of engine issues with the right tools and knowledge!