The Cummins ISB6.7 is one of the most widely used medium-duty diesel engines across North America, powering everything from delivery trucks to school buses. Known for its durability and fuel efficiency, this engine plays a key role in fleet uptime—and when a fault code appears, quick diagnosis is critical.
That’s why Diesel Repair offers a fast, centralized way to access Cummins ISB6.7 fault code information.
Cummins ISB6.7 Engine Overview
- Displacement: 6.7L
- Horsepower Range: 200–360 HP
- Torque: Up to 800 lb-ft
- Emissions System: SCR + DPF + EGR
- Fuel System: High-Pressure Common Rail (HPCR)
- Applications: Freightliner M2, International MV Series, Ford F-650, school buses, and more
📍 Get FREE Fault Code Information for all makes and models in Diesel Repair → Diesel Repair
Fault Codes for Caterpillar C15 (2007–2011)
Fault Codes for Cummins ISB6.7
| Fault | PID | SPN | FMI | SID | Title |
| SPN 100 FMI 1 (415) | 100 | 100 | 1 | Engine Oil Rifle Pressure – Data Valid But Below Normal Operational Range – Most Severe Level | |
| SPN 100 FMI 18 (143) | 100 | 100 | 18 | Engine Oil Rifle Pressure – Data Valid But Below Normal Operational Range – Moderately Severe Level | |
| SPN 100 FMI 2 (435) | 100 | 100 | 2 | Engine Oil Rifle Pressure – Data Erratic, Intermittent, or Incorrect | |
| SPN 100 FMI 3 (135) | 100 | 100 | 3 | Engine Oil Rifle Pressure 1 Sensor Circuit – Voltage Above Normal or Shorted to High Source | |
| SPN 100 FMI 4 (141) | 100 | 100 | 4 | Engine Oil Rifle Pressure 1 Sensor Circuit – Voltage Below Normal or Shorted to Low Source | |
| SPN 101 FMI 0 (556) | 101 | 101 | Crankcase Pressure – Data Valid But Above Normal Operational Range – Most Severe Level | ||
| SPN 101 FMI 15 (1974) | 101 | 101 | 15 | Crankcase Pressure – Data Valid But Above Normal Operational Range – Least Severe Level | |
| SPN 101 FMI 16 (555) | 101 | 101 | 16 | Crankcase Pressure – Data Valid But Above Normal Operational Range – Moderately Severe Level | |
| SPN 101 FMI 2 (1942) | 101 | 101 | 2 | Crankcase Pressure – Data Erratic, Intermittent, or Incorrect | |
| SPN 101 FMI 3 (1843) | 101 | 101 | 3 | Crankcase Pressure Circuit – Voltage Above Normal or Shorted to High Source | |
| SPN 101 FMI 4 (1844) | 101 | 101 | 4 | Crankcase Pressure Circuit – Voltage Below Normal or Shorted to Low Source | |
| SPN 102 FMI 2 (2973) | 102 | 102 | 2 | Intake Manifold 1 Pressure – Data Erratic, Intermittent, or Incorrect | |
| SPN 102 FMI 3 (122) | 102 | 102 | 3 | Intake Manifold 1 Pressure Sensor Circuit – Voltage Above Normal or Shorted to High Source | |
| SPN 102 FMI 4 (123) | 102 | 102 | 4 | Intake Manifold 1 Pressure Sensor Circuit – Voltage Below Normal or Shorted to Low Source | |
| SPN 103 FMI 10 (2345) | 103 | 103 | 10 | Turbocharger 1 Speed – Abnormal Rate of Change | |
| SPN 103 FMI 15 (2288) | 103 | 103 | 15 | Turbocharger 1 Speed – Data Valid But Above Normal Operational Range – Least Severe Level | |
| SPN 103 FMI 18 (687) | 103 | 103 | 18 | Turbocharger 1 Speed – Data Valid But Below Normal Operating Range – Moderately Severe Level | |
| SPN 103 FMI 2 (686) | 103 | 103 | 2 | Turbocharger 1 Speed – Data Erratic, Intermittent, or Incorrect | |
| SPN 105 FMI 0 (155) | 105 | 105 | Intake Manifold 1 Temperature – Data Valid but Above Normal Operational Range – Most Severe Level | ||
| SPN 105 FMI 15 (2964) | 105 | 105 | 15 | Intake Manifold 1 Temperature – Data Valid But Above Normal Operational Range – Least Severe Level | |
| SPN 105 FMI 16 (488) | 105 | 105 | 16 | Intake Manifold 1 Temperature – Data Valid But Above Normal Operational Range – Moderately Severe Level | |
| SPN 105 FMI 3 (153) | 105 | 105 | 3 | Intake Manifold 1 Temperature Sensor Circuit – Voltage Above Normal or Shorted to High Source | |
| SPN 105 FMI 4 (154) | 105 | 105 | 4 | Intake Manifold 1 Temperature Sensor Circuit – Voltage Below Normal or Shorted to Low Source | |
| SPN 1072 FMI 3 (2182) | SID 79 | 1072 | 3 | Engine Brake Actuator Driver 1 Circuit – Voltage Above Normal or Shorted to High Source | |
| SPN 1072 FMI 4 (2183) | 1072 | 4 | 79 | Engine Brake Actuator Circuit 1 – Voltage Below Normal or Shorted to Low Source | |
| SPN 1073 FMI 3 (2367) | 1073 | 3 | 80 | Engine Brake Actuator Driver Output 2 Circuit – Voltage Above Normal or Shorted to High Source | |
| SPN 1073 FMI 4 (2363) | 1073 | 4 | 29 | Engine Brake Actuator Driver Output 2 Circuit – Voltage Below Normal or Shorted to Low Source | |
| SPN 1075 FMI 3 (2265) | 1075 | 3 | 126 | Electric Lift Pump for Engine Fuel Supply Circuit – Voltage Above Normal or Shorted to High Source | |
| SPN 1075 FMI 4 (2266) | 1075 | 4 | 126 | Electric Lift Pump for Engine Fuel Supply Circuit – Voltage Below Normal or Shorted to Low Source | |
| SPN 108 FMI 2 (295) | 108 | 108 | 2 | Barometric Pressure – Data Erratic, Intermittent, or Incorrect | |
| SPN 108 FMI 3 (221) | 108 | 108 | 3 | Barometric Pressure Sensor Circuit – Voltage Above Normal or Shorted to High Source | |
| SPN 108 FMI 4 (222) | 108 | 108 | 4 | Barometric Pressure Sensor Circuit – Voltage Below Normal or Shorted to Low Source | |
| SPN 110 FMI 0 (151) | 110 | 110 | Engine Coolant Temperature – Data Valid But Above Normal Operational Range – Most Severe Level | ||
| SPN 110 FMI 15 (2963) | 110 | 110 | 15 | Engine Coolant Temperature – Data Valid But Above Normal Operational Range – Least Severe Level | |
| SPN 110 FMI 16 (146) | 110 | 110 | 16 | Engine Coolant Temperature – Data Valid But Above Normal Operational Range – Moderately Severe Level | |
| SPN 110 FMI 31 (2646) | 110 | 110 | 31 | Engine Coolant Temperature – Condition Exists | |
| SPN 110 FMI 31 (2659) | 110 | 110 | 31 | Engine Coolant Temperature – Condition Exists | |
| SPN 110 FMI 3 (144) | 110 | 110 | 3 | Engine Coolant Temperature 1 Sensor Circuit – Voltage Above Normal or Shorted to High Source | |
| SPN 110 FMI 4 (145) | 110 | 110 | 4 | Engine Coolant Temperature 1 Sensor Circuit – Voltage Below Normal or Shorted to Low Source | |
| SPN 111 FMI 17 (2448) | 111 | 17 | Coolant Level – Data Valid But Below Normal Operational Range – Least Severe Level | ||
| SPN 111 FMI 18 (197) | 111 | 111 | 18 | Coolant Level – Data Valid But Below Normal Operating Range – Moderately Severe Level | |
| SPN 111 FMI 3 (195) | 111 | 111 | 3 | Coolant Level Sensor 1 Circuit – Voltage Above Normal or Shorted to High Source | |
| SPN 111 FMI 3 (195) | 111 | 111 | 3 | Coolant Level Sensor 1 Circuit – Voltage Above Normal or Shorted to High Source | |
| SPN 111 FMI 4 (196) | 111 | 111 | 4 | Coolant Level Sensor 1 Circuit – Voltage Below Normal or Shorted to Low Source | |
| SPN 111 FMI 4 (196) | 111 | 111 | 4 | Coolant Level Sensor 1 Circuit – Voltage Below Normal or Shorted to Low Source | |
| SPN 1136 FMI 4 (698) | 21 | 1136 | 4 | ECM Internal Temperature Sensor Circuit – Voltage Below Normal or Shorted to Low Source | |
| SPN 1172 FMI 3 (691) | 351 | 1172 | 3 | Turbocharger 1 Compressor Inlet Temperature Sensor Circuit – Voltage Above Normal or Shorted to High Source | |
| SPN 1172 FMI 4 (692) | 351 | 1172 | 4 | Turbocharger 1 Compressor Inlet Temperature Sensor Circuit – Voltage Below Normal or Shorted to Low Source | |
| SPN 1209 FMI 2 (2554) | 131 | 1209 | 2 | Exhaust Gas Pressure – Data Erratic, Intermittent, or Incorrect | |
| SPN 1209 FMI 3 (2373) | 131 | 1209 | 3 | Exhaust Gas Pressure Sensor Circuit – Voltage Above Normal or Shorted to High Source | |
| SPN 1209 FMI 4 (2374) | 131 | 1209 | 4 | Exhaust Gas Pressure Sensor Circuit – Voltage Below Normal or Shorted to Low Source | |
| SPN 1347 FMI 3 (272) | 1347 | 3 | 126 | Fuel Pump Pressurizing Assembly 1 Circuit – Voltage Above Normal or Shorted to High Source | |
| SPN 1347 FMI 4 (271) | 1347 | 4 | 126 | Fuel Pump Pressurizing Assembly 1 Circuit – Voltage Below Normal or Shorted to Low Source | |
| SPN 1347 FMI 7 (281) | 1347 | 7 | 126 | Fuel Pump Pressurizing Assembly 1 – Mechanical System Not Responding Properly or Out of Adjustment | |
| SPN 1378 FMI 31 (649) | 1378 | 31 | 115 | Engine Oil Change Interval – Condition Exists | |
| SPN 157 FMI 0 (1911) | 157 | 157 | Injector Metering Rail Number 1 Pressure – Data Valid But Above Normal Operating Range – Most Severe Level | ||
| SPN 157 FMI 0 (449) | 94 | 157 | Injector Metering Rail Number 1 Pressure – Data Valid But Above Normal Operating Range – Most Severe Level | ||
| SPN 157 FMI 16 (553) | 157 | 157 | 16 | Injector Metering Rail Number 1 Pressure – Data Valid But Above Normal Operating Range – Moderately Severe Level | |
| SPN 157 FMI 18 (559) | 157 | 157 | 18 | Injector Metering Rail 1 Pressure – Data Valid But Below Normal Operating Range – Moderately Severe Level | |
| SPN 157 FMI 2 (554) | 157 | 157 | 2 | Injector Metering Rail 1 Pressure – Data Erratic, Intermittent, or Incorrect | |
| SPN 157 FMI 3 (451) | 157 | 157 | 3 | Injector Metering Rail Number 1 Pressure Sensor Circuit – Voltage Above Normal or Shorted to High Source | |
| SPN 157 FMI 4 (452) | 157 | 157 | 4 | Injector Metering Rail Number 1 Pressure Sensor Circuit – Voltage Below Normal or Shorted to Low Source | |
| SPN 1590 FMI 2 (784) | 1590 | 2 | 145 | Adaptive Cruise Control Mode – Data Erratic, Intermittent, or Incorrect | |
| SPN 167 FMI 1 (598) | 167 | 167 | 1 | Electrical Charging System Voltage – Data Valid But Below Normal Operating Range – Most Severe Level | |
| SPN 167 FMI 16 (596) | 167 | 167 | 16 | Electrical Charging System Voltage – Data Valid But Above Normal Operating Range – Moderately Severe Level | |
| SPN 167 FMI 18 (597) | 167 | 167 | 18 | Electrical Charging System Voltage – Data Valid But Below Normal Operating Range – Moderately Severe Level | |
| SPN 168 FMI 16 (442) | 168 | 168 | 16 | Battery 1 Voltage – Data Valid But Above Normal Operational Range – Moderately Severe Level | |
| SPN 168 FMI 18 (441) | 168 | 168 | 18 | Battery 1 Voltage – Data Valid But Below Normal Operational Range – Moderately Severe Level | |
| SPN 171 FMI 3 (249) | 171 | 171 | 3 | Ambient Air Temperature Sensor 1 Circuit – Voltage Above Normal or Shorted to High Source | |
| SPN 171 FMI 4 (256) | 171 | 171 | 4 | Ambient Air Temperature Sensor 1 Circuit – Voltage Below Normal or Shorted to Low Source | |
| SPN 190 FMI 0 (234) | 190 | 190 | Engine Crankshaft Speed / Position – Data Valid But Above Normal Operational Range – Most Severe Level | ||
| SPN 190 FMI 2 (2321) | 190 | 190 | 2 | Engine Crankshaft Speed / Position – Data Erratic, Intermittent, or Incorrect | |
| SPN 190 FMI 2 (689) | 190 | 190 | 2 | Engine Crankshaft Speed / Position – Data Erratic, Intermittent, or Incorrect | |
| SPN 2623 FMI 3 (1239) | 2623 | 3 | Accelerator Pedal or Lever Position Sensor 2 Circuit – Voltage Above Normal or Shorted to High Source | ||
| SPN 2623 FMI 4 (1241) | 2623 | 4 | Accelerator Pedal or Lever Position Sensor 2 Circuit – Voltage Below Normal or Shorted to Low Source | ||
| SPN 2633 (3616) | 2633 | Variable Geometry Turbocharger (VGT) Actuator Position – Special Instructions | |||
| SPN 2789 FMI 15 (2346) | 2789 | 15 | Turbocharger Turbine Inlet Temperature (Calculated) – Data Valid But Above Normal Operational Range – Least Severe Level | ||
| SPN 2789 FMI 16 (2451) | 2789 | 16 | Turbocharger Turbine Inlet Temperature (Calculated) – Data Valid But Above Normal Operational Range – Moderately Severe Level | ||
| SPN 2790 FMI 15 (2347) | 2790 | 15 | Turbocharger Compressor Outlet Temperature (Calculated) – Data Valid But Above Normal Operational Range – Least Severe Level | ||
| SPN 2791 FMI 13 (1896) | 2791 | 13 | 146 | EGR Valve Controller – Out of Calibration | |
| SPN 2791 FMI 14 (2813) | 146 | 2791 | 14 | EGR Valve Control – Special Instructions | |
| SPN 2791 FMI 4 (2351) | 2791 | 4 | 146 | EGR Valve Control Circuit – Voltage Below Normal or Shorted to Low Source | |
| SPN 2791 FMI 5 (2349) | 2791 | 5 | 146 | EGR Valve Control Circuit – Current Below Normal or Open Circuit | |
| SPN 2791 FMI 7 (2357) | 2791 | 7 | 146 | EGR Valve Control Circuit – Mechanical System Not Responding Properly or Out of Adjustment | |
| SPN 2797 FMI 13 (2765) | 2797 | 13 | Engine Injector Bank 1 Barcodes – Out of Calibration | ||
| SPN 27 FMI 4 (2272) | 27 | 27 | 4 | EGR Valve Position Circuit – Voltage Below Normal or Shorted to Low Source | |
| SPN 3050 FMI 11 (2637) | 3050 | 11 | Catalyst Face Plugged – Root Cause Not Known | ||
| SPN 3050 FMI 13 (2638) | 3050 | 13 | Catalyst Efficiency – Out of Calibration | ||
| SPN 3050 FMI 31 (1664) | 3050 | 31 | Catalyst Missing – Condition Exists | ||
| SPN 3064 FMI 31 (1993) | 3064 | 31 | Aftertreatment Particulate Trap Missing – Condition Exists | ||
| SPN 3241 FMI 0 (1966) | 326 | 3241 | Aftertreatment Exhaust Gas Temperature 1 – Data Valid But Above Normal Operating Range – Most Severe Level | ||
| SPN 3241 FMI 2 (1667) | 3241 | 2 | Aftertreatment Exhaust Gas Temperature 1 – Data Erratic, Intermittent, or Incorrect | ||
| SPN 3241 FMI 31 (1663) | 3241 | 31 | Catalyst Inlet Temperature Sensor Swapped with Outlet – Condition Exists | ||
| SPN 3241 FMI 3 (1666) | 3241 | 3 | Aftertreatment Exhaust Gas Temperature 1 Circuit – Voltage Above Normal or Shorted to High Source | ||
| SPN 3241 FMI 4 (1665) | 3241 | 4 | Aftertreatment Exhaust Gas Temperature 1 Circuit – Voltage Below Normal or Shorted to Low Source | ||
| SPN 3245 FMI 0 (1973) | 3245 | Exhaust Gas Temperature 3 – Data Valid But Above Normal Operational Range – Most Severe Level | |||
| SPN 3245 FMI 16 (1972) | 3245 | 16 | Exhaust Gas Temperature 3 – Data Valid But Above Normal Operational Range – Moderately Severe Level | ||
| SPN 3245 FMI 2 (1878) | 3245 | 2 | Aftertreatment Exhaust Gas Temperature 3 – Data Erratic, Intermittent, or Incorrect | ||
| SPN 3245 FMI 3 (1876) | 3245 | 3 | Aftertreatment Exhaust Gas Temperature 3 Circuit – Voltage Above Normal or Shorted to High Source | ||
| SPN 3245 FMI 4 (1877) | 3245 | 4 | Aftertreatment Exhaust Gas Temperature 3 Circuit – Voltage Below Normal or Shorted to Low Source | ||
| SPN 3249 FMI 0 (1969) | 3249 | Aftertreatment Exhaust Gas Temperature 2 – Data Valid But Above Normal Operational Range – Most Severe Level | |||
| SPN 3249 FMI 16 (1968) | 3249 | 16 | Aftertreatment Exhaust Gas Temperature 2 – Data Valid But Above Normal Operational Range – Moderately Severe Level | ||
| SPN 3249 FMI 17 (2742) | 3249 | 17 | Aftertreatment Exhaust Gas Temperature 2 – Data Valid But Below Normal Operating Range – Least Severe Level | ||
| SPN 3249 FMI 18 (2743) | 3249 | 18 | Aftertreatment Exhaust Gas Temperature 2 – Data Valid But Below Normal Operating Range – Moderately Severe Level | ||
| SPN 3249 FMI 2 (1676) | 3249 | 2 | Aftertreatment Exhaust Gas Temperature 2 – Data Erratic, Intermittent, or Incorrect | ||
| SPN 3249 FMI 3 (1675) | 3249 | 3 | Aftertreatment Exhaust Gas Temperature 2 Circuit – Voltage Above Normal or Shorted to High Source | ||
| SPN 3249 FMI 4 (1674) | 3249 | 4 | Aftertreatment Exhaust Gas Temperature 2 Circuit – Voltage Below Normal or Shorted to Low Source | ||
| SPN 3250 FMI 13 (1691) | 3250 | 13 | Catalyst Efficiency – Out of Calibration | ||
| SPN 3251 FMI 0 (1922) | 3251 | 324 | Aftertreatment Diesel Particulate Filter Differential Pressure – Data Valid But Above Normal Operating Range – Most Severe Level | ||
| SPN 3251 FMI 15 (2639) | 3251 | 15 | 324 | Aftertreatment Diesel Particulate Filter Differential Pressure – Data Valid But Above Normal Operating Range – Least Severe Level | |
| SPN 3251 FMI 16 (1921) | 3251 | 16 | 324 | Aftertreatment Diesel Particulate Filter Differential Pressure – Data Valid But Above Normal Operating Range – Moderately Severe Level | |
| SPN 3251 FMI 2 (1883) | 3251 | 2 | 324 | Aftertreatment Diesel Particulate Filter Differential Pressure Sensor – Data Erratic, Intermittent, or Incorrect | |
| SPN 3251 FMI 3 (1879) | 3251 | 3 | 324 | Aftertreatment Particulate Filter Differential Pressure Sensor Circuit – Voltage Above Normal or Shorted to High Source | |
| SPN 3251 FMI 4 (1881) | 3251 | 4 | 324 | Aftertreatment Particulate Filter Differential Pressure Sensor Circuit – Voltage Below Normal or Shorted to Low Source | |
| SPN 3481 FMI 16 (2778) | 289 | 3481 | 16 | Aftertreatment Fuel Rate – Data Valid But Above Normal Operational Range – Moderately Severe Level | |
| SPN 3489 FMI 18 (3738) | 3489 | 18 | Air Supply Actuator – Data Valid But Below Normal Operating Range – Moderately Severe Level | ||
| SPN 3509 FMI 3 (386) | 3509 | 3 | 212 | Sensor Supply 1 Circuit – Voltage Above Normal or Shorted to High Source | |
| SPN 3509 FMI 4 (352) | 3509 | 4 | 212 | Sensor Supply 1 Circuit – Voltage Below Normal or Shorted to Low Source | |
| SPN 3511 FMI 3 (239) | 3511 | 3 | 232 | Sensor Supply 3 Circuit – Voltage Above Normal or Shorted to High Source | |
| SPN 3511 FMI 4 (238) | 3511 | 4 | 232 | Sensor Supply 3 Circuit – Voltage Below Normal or Shorted to Low Source | |
| SPN 3512 FMI 3 (2185) | 3512 | 3 | 232 | Sensor Supply 4 Circuit – Voltage Above Normal or Shorted to High Source | |
| SPN 3512 FMI 4 (2186) | 3512 | 4 | 232 | Sensor Supply 4 Circuit – Voltage Below Normal or Shorted to Low Source | |
| SPN 3513 FMI 3 (1695) | 3513 | 3 | 232 | Sensor Supply 5 – Voltage Above Normal or Shorted to High Source | |
| SPN 3513 FMI 4 (1696) | 3513 | 4 | 232 | Sensor Supply 5 – Voltage Below Normal or Shorted to Low Source | |
| SPN 3555 FMI 17 (1943) | 3555 | 17 | Ambient Air Density – Data Valid But Below Normal Operational Range – Least Severe Level | ||
| SPN 3556 FMI 16 (2728) | 3556 | 16 | Aftertreatment Fuel Injector 1 – Data Valid But Above Normal Operational Range – Moderately Severe Level | ||
| SPN 3597 FMI 18 (1938) | 3597 | 18 | ECU Power Output Supply Voltage 1 – Data Valid But Below Normal Operational Range – Moderately Severe Level | ||
| SPN 3703 FMI 31 (2777) | 390 | 3703 | 31 | Particulate Trap Active Regeneration Inhibited Due to Permit Switch – Condition Exists | |
| SPN 3936 FMI 15 (1981) | 3936 | 15 | 324 | Aftertreatment Particulate Filter Differential Pressure – Data Valid But Above Normal Operational Range – Least Severe Level | |
| SPN 411 FMI 16 (2359) | 411 | 411 | 16 | Exhaust Gas Recirculation Valve Differential Pressure – Data Valid But Above Normal Operating Range – Moderately Severe Level | |
| SPN 411 FMI 18 (1899) | 411 | 411 | 18 | Exhaust Gas Recirculation Valve Delta Pressure – Data Valid But Below Normal Operating Range – Moderately Severe Level | |
| SPN 411 FMI 2 (1866) | 411 | 411 | 2 | Exhaust Gas Recirculation Valve Delta Pressure – Data Erratic, Intermittent, or Incorrect | |
| SPN 411 FMI 3 (2273) | 411 | 411 | 3 | Exhaust Gas Recirculation Valve Delta Pressure Sensor Circuit – Voltage Above Normal or Shorted to High Source | |
| SPN 411 FMI 4 (2274) | 411 | 411 | 4 | Exhaust Gas Recirculation Valve Delta Pressure Sensor Circuit – Voltage Below Normal or Shorted to Low Source | |
| SPN 412 FMI 15 (2961) | 412 | 412 | 15 | Exhaust Gas Recirculation Temperature – Data Valid But Above Normal Operational Range – Least Severe Level | |
| SPN 412 FMI 16 (2962) | 412 | 412 | 16 | Exhaust Gas Recirculation Temperature – Data Valid But Above Normal Operational Range – Moderately Severe Level | |
| SPN 412 FMI 3 (2375) | 412 | 412 | 3 | Exhaust Gas Recirculation Temperature Sensor Circuit – Voltage Above Normal or Shorted to High Source | |
| SPN 412 FMI 4 (2376) | 412 | 412 | 4 | Exhaust Gas Recirculation Temperature Sensor Circuit – Voltage Below Normal or Shorted to Low Source | |
| SPN 558 FMI 13 (432) | 558 | 13 | 230 | Accelerator Pedal or Lever Idle Validation Circuit – Out of Calibration | |
| SPN 558 FMI 2 (431) | 558 | 2 | 230 | Accelerator Pedal or Lever Idle Validation Circuit – Data Erratic, Intermittent, or Incorrect | |
| SPN 612 FMI 2 (115) | 190 | 612 | 2 | Engine Magnetic Speed / Position Lost Both of Two Signals – Data Erratic, Intermittent, or Incorrect | |
| SPN 627 FMI 12 (351) | 627 | 12 | 251 | Injector Power Supply – Bad Intelligent Device or Component | |
| SPN 627 FMI 2 (1117) | 627 | 2 | 251 | Power Supply Lost With Ignition On – Data Erratic, Intermittent, or Incorrect | |
| SPN 629 FMI 12 (111) | 629 | 12 | 254 | Electronic Control Module Critical Internal Failure – Bad Intelligent Device or Component | |
| SPN 629 FMI 12 (343) | 629 | 12 | 254 | Electronic Control Module Warning Internal Hardware Failure – Bad Intelligent Device or Component | |
| SPN 633 FMI 31 (2311) | 633 | 31 | 18 | Electronic Fuel Injection Control Valve Circuit – Condition Exists | |
| SPN 639 FMI 13 (286) | 639 | 13 | 231 | SAE J1939 Multiplexing Configuration Error – Out of Calibration | |
| SPN 639 FMI 9 (285) | 639 | 9 | 231 | SAE J1939 Multiplexing PGN Timeout Error – Abnormal Update Rate | |
| SPN 639 FMI 9 (427) | 639 | 9 | 231 | SAE J1939 Datalink – Abnormal Update Rate | |
| SPN 641 FMI 11 (2198) | 641 | 11 | 27 | VGT Actuator Driver Circuit – Root Cause Not Known | |
| SPN 641 FMI 12 (2634) | 641 | 12 | 27 | VGT Actuator Controller – Bad Intelligent Device or Component | |
| SPN 641 FMI 13 (2449) | 641 | 13 | 27 | VGT Actuator Controller – Out of Calibration | |
| SPN 641 FMI 15 (1962) | SID 27 | 641 | 15 | VGT Actuator Driver Over Temperature (Calculated) – Data Valid But Above Normal Operational Range – Least Severe Level | |
| SPN 641 FMI 31 (2635) | 641 | 31 | 27 | VGT Actuator Driver Circuit – Condition Exists | |
| SPN 641 FMI 7 (2387) | 641 | 7 | 27 | Variable Geometry Turbocharger (VGT) Actuator Driver Circuit (Motor) – Mechanical System Not Responding Properly or Out of Adjustment | |
| SPN 641 FMI 9 (2636) | 641 | 9 | 27 | VGT Actuator Driver Circuit – Abnormal Update Rate | |
| SPN 647 FMI 3 (2377) | 647 | 3 | 33 | Fan Control Circuit – Voltage Above Normal or Shorted to High Source | |
| SPN 647 FMI 4 (245) | 647 | 4 | 33 | Fan Control Circuit – Voltage Below Normal or Shorted to Low Source | |
| SPN 651 FMI 5 (322) | 651 | 5 | 1 | Injector Solenoid Driver Cylinder 1 Circuit – Current Below Normal or Open Circuit | |
| SPN 652 FMI 5 (331) | 652 | 5 | 2 | Injector Solenoid Driver Cylinder 2 Circuit – Current Below Normal or Open Circuit | |
| SPN 653 FMI 5 (324) | 653 | 5 | 3 | Injector Solenoid Driver Cylinder 3 Circuit – Current Below Normal or Open Circuit | |
| SPN 654 FMI 5 (332) | 654 | 5 | 4 | Injector Solenoid Driver Cylinder 4 Circuit – Current Below Normal or Open Circuit | |
| SPN 655 FMI 5 (323) | 655 | 5 | 5 | Injector Solenoid Driver Cylinder 5 Circuit – Current Below Normal or Open Circuit | |
| SPN 656 FMI 5 (325) | 656 | 5 | 6 | Injector Solenoid Driver Cylinder 6 Circuit – Current Below Normal or Open Circuit | |
| SPN 677 FMI 3 (584) | 677 | 3 | 39 | Starter Relay Driver Circuit – Voltage Above Normal or Shorted to High Source | |
| SPN 677 FMI 4 (585) | 677 | 4 | 39 | Starter Relay Driver Circuit – Voltage Below Normal or Shorted to Low Source | |
| SPN 697 FMI 3 (2557) | 697 | 3 | 57 | Auxiliary PWM Driver 1 – Voltage Above Normal or Shorted to High Source | |
| SPN 697 FMI 4 (2558) | 697 | 4 | 57 | Auxiliary PWM Driver 1 – Voltage Below Normal or Shorted to Low Source | |
| SPN 703 FMI 11 (779) | 703 | 11 | 51 | Auxiliary Equipment Sensor Input 3 – Root Cause Not Known | |
| SPN 703 FMI 14 (2195) | 703 | 14 | 51 | Auxiliary Equipment Sensor Input 3 Engine Protection Critical – Special Instructions | |
| SPN 723 FMI 2 (2322) | 723 | 2 | 64 | Engine Camshaft Speed / Position Sensor – Data Erratic, Intermittent, or Incorrect | |
| SPN 723 FMI 2 (778) | 723 | 2 | 64 | Engine Camshaft Speed / Position – Data Erratic, Intermittent, or Incorrect | |
| SPN 723 FMI 7 (731) | 723 | 7 | 64 | Engine Speed / Position Camshaft and Crankshaft Misalignment – Mechanical System Not Responding Properly or Out of Adjustment | |
| SPN 729 FMI 3 (2555) | 729 | 3 | 70 | Intake Air Heater 1 Circuit – Voltage Above Normal or Shorted to High Source | |
| SPN 729 FMI 4 (2556) | 729 | 4 | 70 | Intake Air Heater 1 Circuit – Voltage Below Normal or Shorted to Low Source | |
| SPN 81 FMI 16 (2754) | 81 | 16 | Engine Particulate Filter Inlet Pressure – Data Valid But Above Normal Operational Range – Moderately Severe Level | ||
| SPN 84 FMI 10 (242) | 84 | 84 | 10 | Wheel-Based Vehicle Speed Sensor Circuit Tampering Has Been Detected – Abnormal Rate of Change | |
| SPN 84 FMI 2 (241) | 84 | 84 | 2 | Wheel-Based Vehicle Speed – Data Erratic, Intermittent, or Incorrect | |
| SPN 91 FMI 19 (287) | 91 | 91 | 19 | SAE J1939 Multiplexed Accelerator Pedal or Lever Sensor System – Received Network Data In Error | |
| SPN 91 FMI 2 (1242) | 91 | 91 | 2 | Accelerator Pedal or Lever Position Sensor 1 and 2 – Data Erratic, Intermittent, or Incorrect | |
| SPN 91 FMI 3 (131) | 91 | 91 | 3 | Accelerator Pedal or Lever Position Sensor 1 Circuit – Voltage Above Normal or Shorted to High Source | |
| SPN 91 FMI 4 (132) | 91 | 91 | 4 | Accelerator Pedal or Lever Position Sensor 1 Circuit – Voltage Below Normal or Shorted to Low Source | |
| SPN 93 FMI 2 (528) | 93 | 93 | 2 | Auxiliary Alternate Torque Validation Switch – Data Erratic, Intermittent, or Incorrect | |
| SPN 974 FMI 19 (288) | 372 | 974 | 19 | SAE J1939 Multiplexing Remote Accelerator Pedal or Lever Position Sensor System – Received Network Data In Error | |
| SPN 974 FMI 3 (133) | 372 | 974 | 3 | Remote Accelerator Pedal or Lever Position Sensor 1 Circuit – Voltage Above Normal or Shorted to High Source | |
| SPN 974 FMI 4 (134) | 372 | 974 | 4 | Remote Accelerator Pedal or Lever Position Sensor 1 Circuit – Voltage Below Normal or Shorted to Low Source | |
| SPN 97 FMI 15 (418) | 97 | 97 | 15 | Water-In-Fuel Indicator – Data Valid But Above Normal Operating Range – Least Severe Level | |
| SPN 97 FMI 3 (428) | 97 | 97 | 3 | Water-in-Fuel Indicator Sensor Circuit – Voltage Above Normal or Shorted to High Source | |
| SPN 97 FMI 4 (429) | 97 | 97 | 4 | Water-in-Fuel Indicator Sensor Circuit – Voltage Below Normal or Shorted to Low Source | |
| SPN 98 FMI 0 (688) | 98 | 98 | Engine Oil Level – Data Valid But Above Normal Operational Range – Most Severe Level | ||
| SPN 98 FMI 1 (253) | 98 | 98 | 1 | Engine Oil Level – Data Valid But Below Normal Operational Range – Most Severe Level | |
| SPN 98 FMI 17 (471) | 98 | 98 | 17 | Engine Oil Level – Data Valid But Below Normal Operational Range – Least Severe Level | |
| SPN 98 FMI 2 (252) | 98 | 98 | 2 | Engine Oil Level – Data Erratic, Intermittent, or Incorrect | |
| SPN 98 FMI 4 (499) | 98 | 98 | 4 | Engine Oil Level Sensor Circuit – Voltage Below Normal or Shorted to Low Source |
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