Detroit Diesel Series 60 12.7L (2004-2006) Fault Code List

by | Jun 16, 2025 | Diagnostic Guides and Troubleshooting, Diesel Repair, Maintenance Tips and Procedures

Fault code chart for Detroit Diesel Series 60 12.7L (2004–2006) engine models.

The Detroit Diesel Series 60 12.7L engine remained a popular option for fleet operators between 2004 and 2006. With continued improvements to emissions systems and diagnostic capabilities, these models introduced tighter controls and increased reliability across long-haul operations.

Technicians relied heavily on fault codes to quickly troubleshoot and fix issues—making a robust and accessible fault code library essential

Detroit Diesel Series 60 12.7L (2004–2006) Engine Overview

  • Displacement: 12.7L
  • Horsepower Range: 365–500 HP
  • Torque: Up to 1,650 lb-ft
  • Emissions System: EGR
  • Fuel System: Unit Injection System (UIS)
  • Applications: Freightliner Century, Columbia, Western Star, and other Class 8 trucks

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Fault Codes for Detroit Diesel Series 60 12.7L (2004–2006)

Fault PID SPN FMI SID Title
11 187 187 4 Variable Speed Governor (VSG) Sensor Voltage Low
12 187 187 3 Variable Speed Governor (VSG) Sensor Voltage High
13 111 111 6 Add Coolant Level Sensor Input Voltage Low
13 2791 6 146 EGR Valve Current Too High
13 111 111 4 Coolant Level Sensor Input Voltage Low
14 110 110 3 Coolant Temperature Sensor Input Voltage High
14 175 175 3 Oil Temperature Sensor Input Voltage High
15 110 110 4 Coolant Temperature Sensor Input Voltage Low
15 175 175 4 Oil Temperature Sensor Input Voltage Low
16 2791 5 146 EGR Valve Current Too Low
16 111 111 3 Coolant Level Sensor Input Voltage High
16 111 111 5 Add Coolant Level Sensor Input Voltage High
21 91 91 3 Throttle Position Sensor Input Voltage High
22 91 91 4 Throttle Position Sensor Input Voltage Low
23 174 174 3 Fuel Temperature Sensor Input Voltage High
24 174 174 4 Fuel Temperature Sensor Input Voltage Low
26 640 11 25 Aux. Shutdown No. 1 Active
26 640 11 61 Aux. Shutdown No. 2 Active
27 172 172 3 Air Temperature Sensor Input Voltage High
28 172 172 4 Air Temperature Sensor Input Voltage Low
29 404 404 4 Turbo Compressor Temperature Out Sensor Input Voltage Low
29 351 351 4 TCI Temperature Circuit Failed Low
31 3 260 Aux. Output No. 12 Open Circuit (High Side) – Pin E-46
31 703 4 51 Aux. Output No. 3 Short to Ground (High Side) – Pin E-49
31 704 4 52 Aux. Output No. 4 Short to Ground (High Side) – Pin E-48
31 4 261 Aux. Output No. 13 Short to GND (High Side) – Pin E-47
31 4 265 Aux. Output No. 17 Short to GND (High Side) – Pin E-53
31 704 3 52 Aux. Output No. 4 Open Circuit (High Side) – Pin E-48
31 3 262 Aux. Output No. 14 Open Circuit (High Side) – Pin E-50
31 3 263 Aux. Output No. 15 Open Circuit (High Side) – Pin E-51
31 3 265 Aux. Output No. 17 Open Circuit (High Side) – Pin E-53
31 3 261 Aux. Output No. 13 Open Circuit (High Side) – Pin E-47
31 3 264 Aux. Output No. 16 Open Circuit (High Side) – Pin E-52
31 4 260 Aux. Output No. 12 Short to GND (High Side) – Pin E-46
31 703 3 51 Aux. Output No. 3 Open Circuit (High Side) – Pin E-49
31 4 263 Aux. Output No. 15 Short to GND (High Side) – Pin E-51
31 4 264 Aux. Output No. 16 Short to GND (High Side) – Pin E-52
31 4 262 Aux. Output No. 14 Short to GND (High Side) – Pin E-50
32 623 4 238 RSL Open Circuit
32 623 3 238 RSL Short to Battery (+)
32 624 3 239 AWL Short to Battery (+)
32 624 4 239 AWL Open Circuit
33 102 102 3 Turbo Boost Pressure Sensor Input Voltage High
34 102 102 4 Turbo Boost Pressure Sensor Input Voltage Low
35 100 100 3 Oil Pressure Sensor Input Voltage High
36 100 100 4 Oil Pressure Sensor Input Voltage Low
37 95 95 3 Fuel Restriction Sensor Input Voltage High
38 95 95 4 Fuel Restriction Sensor Input Voltage Low
39 641 11 147 VNT Vanes at Max – Jake
39 641 14 147 EGR Flow Too Low
39 641 2 147 Low or High Boost – Boost Mode / VNT Vanes Not Responding (Boost Mode)
39 2791 7 146 EGR Valve Not Responding
39 2791 2 146 EGR Leak – Boost Power
39 647 7 147 Excessive EGR Flow – EGR Mode / VNT Vanes Not Responding (EGR Mode)
39 2791 12 146 EGR Leak – Boost Jake
39 641 12 147 Low or High Boost During Jake Operation / VNT Vanes Not Responding (Jake Mode)
41 636 21 Too Many SRS / CMP Sensor (Missing SRS / CKP Sensor)
42 636 1 21 Too Few SRS / CMP Sensor (Missing SRS / CMP Sensor)
43 111 111 1 Coolant Level Low
44 110 110 14 Engine Power Derate Due to Coolant Temperature
44 175 175 Oil Temperature High
44 172 172 Air Inlet Temperature High
44 110 110 Coolant Temperature High
44 105 105 14 Engine Power Derate Due to Intake Manifold Temperature
44 105 105 Intake Manifold Temperature High
44 175 175 14 Engine Power Derate Due to Oil Temperature
45 100 100 1 Oil Pressure Low
46 620 1 232 Sensor Supply Voltage Low – Pin E-12/E-26
46 1 211 Sensor Supply Pins V-11 / V-12 Low
46 168 168 1 ECU Battery Voltage Low
47 102 102 Turbo Boost Pressure High
47 106 106 Air Inlet Pressure High
48 94 94 1 Fuel Pressure Low
48 351 351 1 TCI Temperature Low
48 411 411 1 EGR Delta Pressure Low
48 412 412 1 EGR Temperature Low
48 404 404 1 Turbo Compressor Temperature Out Low
49 404 404 14 Engine Power Derate Due to Turbo Compressor Outlet Temperature
49 351 351 TCI Temperature High
49 404 404 Turbo Compressor Outlet (TCO) Temperature High
51 404 404 3 Turbo Compressor Outlet Temperature Sensor Input Voltage High
51 351 351 3 TCI Temperature Circuit Failed High
52 12 254 A/D Conversion Failed
53 12 253 Memory Write Error – Single Location
53 2 253 Memory Check Failed on Startup
54 84 84 12 Vehicle Speed Sensor Fault
55 639 12 231 J1939 Data Link Fault
55 1484 14 216 Other ECU Fault (Logged in Conjunction with Another Fault – Indicates Missing Information from Another ECU)
56 608 12 250 J1587 Data Link Fault
58 12 243 Cruise Control Set / Coast Switch Failed
58 9 243 Cruise Control Set / Coast Switch Not Responding
58 9 244 Cruise Control Enable Switch Not Responding
58 9 242 Cruise Control Resume / Accel Switch Not Responding
58 12 242 Cruise Control / Accel Switch Failed
58 12 244 Cruise Control Enable Switch Failed
58 70 9 Park Brake / Safety Loop Switch Not Responding
58 12 245 Clutch Pedal Switch Failed
58 40 12 Engine Retarder Switch Failed
58 9 246 Service Brake Pedal Switch Not Responding
58 12 246 Service Brake Pedal Switch Failed
58 9 246 Service Brake Pedal Switch Not Responding
58 40 9 Engine Retarder Switch Not Responding
58 9 245 Clutch Pedal Switch Not Responding
58 9 244 Cruise Control Enable Switch Not Responding
61 6 5 Injector No. 5 Circuit Short to Ground
61 6 4 Injector No. 4 Circuit Short to Ground
61 6 1 Injector No. 1 Circuit Short to Ground
61 2 Injector No. 2 Response Time Long
61 3 Injector No. 3 Response Time Long
61 6 Injector No. 6 Response Time Long
61 5 Injector No. 5 Response Time Long
61 4 Injector No. 4 Response Time Long
61 1 Injector No. 1 Response Time Long
61 6 6 Injector No. 6 Circuit Short to Ground
61 6 3 Injector No. 3 Circuit Short to Ground
61 6 2 Injector No. 2 Circuit Short to Ground
62 711 4 259 Auxiliary Output No. 11 Open Circuit – Pin E-13
62 701 3 26 Auxiliary Output No. 1 Short to Battery (+) – Pin V-4
62 702 3 40 Auxiliary Output No. 2 Short to Battery (+) – Pin V-5
62 701 4 26 Auxiliary Output No. 1 Open Circuit – Pin V-4
62 706 4 54 Auxiliary Output No. 6 Open Circuit – Pin V-7
62 707 3 55 Auxiliary Output No. 7 Short to Battery (+) – Pin V-40
62 707 4 55 Auxiliary Output No. 7 Open Circuit – Pin V-40
62 708 3 56 Auxiliary Output No. 8 Short to Battery (+) – Pin V-53
62 705 4 53 Auxiliary Output No. 5 Open Circuit – Pin V-6
62 706 3 54 Auxiliary Output No. 6 Short to Battery (+) – Pin V-7
62 709 4 257 Auxiliary Output No. 9 Open Circuit – Pin V-54
62 710 3 258 Auxiliary Output No. 10 Short to GND – Pin V-55
62 710 4 258 Auxiliary Output No. 10 Open Circuit – Pin V-55
62 711 3 259 Auxiliary Output No. 11 Short to GND – Pin E-13
62 702 4 40 Auxiliary Output No. 2 Open Circuit – Pin V-5
62 708 4 56 Auxiliary Output No. 8 Open Circuit – Pin V-53
62 705 3 53 Auxiliary Output No. 5 Short to Battery (+) – Pin V-6
62 709 3 257 Auxiliary Output No. 9 Short to GND – Pin V-54
63 697 4 57 PWM No. 1 Open Circuit – Pin V-52
63 699 4 59 PWM No. 3 Open Circuit – Pin E-1
63 699 3 59 PWM No. 3 Short to Battery (+) – Pin E-1
63 699 1 59 PWM No. 3 Below Normal Range – Pin E-1
63 699 59 PWM No. 3 Above Normal Range – Pin E-1
63 697 57 PWM No. 1 Normal Range – Pin V-52
63 697 7 57 PWM No. 1 Mechanical Failure – Pin V-52
63 702 7 268 PWM No. 6 Mechanical System Failed – Pin E-11
63 702 4 268 PWM No. 6 Mechanical System Failed – Pin E-11
63 702 3 268 PWM No. 6 Short to Battery – Pin E-11
63 698 3 58 PWM No. 2 Short to Battery (+) – Pin V-46
63 698 1 58 PWM No. 2 Below Normal Range – Pin V-46
63 698 58 PWM No. 2 Above Normal Range – Pin V-46
63 700 7 60 PWM No. 4 Mechanical Failure – Pin E-4
63 697 3 57 PWM No. 1 Short to Battery (+) – Pin V-52
63 700 4 60 PWM No. 4 Open Circuit – Pin E-4
63 700 3 60 PWM No. 4 Short to Battery (+) – Pin E-4
63 700 1 60 PWM No. 4 Below Normal Range – Pin E-4
63 701 1 267 PWM No. 5 Below Normal Range – Pin E-8
63 701 3 267 PWM No. 5 Short to Battery – E-8
63 701 4 267 PWM No. 5 Open Circuit – Pin E-8
63 701 7 267 PWM No. 5 Mechanical System Failed – Pin E-8
63 698 7 58 PWM No. 2 Mechanical Failure – Pin V-46
63 701 267 PWM No. 5 Above Normal Range – Pin E-8
63 702 268 PWM No. 6 Above Normal Range – Pin E-11
63 702 1 268 PWM No. 6 Below Normal Range – Pin E-11
63 697 1 57 PWM No. 1 Below Normal Range – Pin V-52
63 699 7 59 PWM No. 3 Mechnical Failure – Pin E-1
63 698 4 58 PWM No. 2 Open Circuit – Pin V-46
63 700 60 PWM No. 4 Normal Range – Pin E-4
64 103 103 1 Turbo Speed Low (Rel. 2.0 or Later)
64 103 103 8 Turbo Speed Sensor Input Failure – Abnormal Period
64 103 103 Turbo Overspeed
65 107 107 3 Air Filter Restriction Sensor Voltage High
65 107 107 4 Air Filter Restriction Sensor Voltage Low
66 99 99 3 Oil Filter Restriction Sensor Voltage High
66 99 99 4 Oil Filter Restriction Sensor Voltage Low
68 558 5 230 TPS Idle Validation Circuit Fault (Open Circuit)
68 558 6 230 TPS Idle Validation Circuit Fault (Short to Ground)
71 1 Injector No. 1 Response Time Short
71 5 Injector No. 5 Response Time Short
71 4 Injector No. 4 Response Time Short
71 3 Injector No. 3 Response Time Short
71 6 Injector No. 6 Response Time Short
71 2 Injector No. 2 Response Time Short
72 84 84 Vehicle Overspeed
72 84 84 11 Vehicle Overspeed (Absolute)
73 107 107 Air Filter Restriction High
74 70 70 4 Optimized Idle Safety Loop Short to Ground
75 21 211 Sensor Supply Pins V-11 / V-12 Voltage High
75 168 168 ECU Battery Voltage High
75 620 232 Sensor Supply Voltage High – Pin E-26
77 73 73 1 Fire Pump Pressure Low
77 99 99 1 Oil Filter Differential Pressure Low
77 251 251 13 Clock Module Failure
77 354 354 Relative Humidity Above Range
77 108 108 Barometric Pressure High
77 108 108 1 Barometric Pressure Low
77 109 Coolant Pressure High
77 110 110 1 Coolant Temperature Low
77 171 171 1 Ambient Air Temperature Low
77 172 1 Air Inlet Temperature Low
77 175 175 1 Engine Oil Temperature Low
77 354 354 1 Relative Humidity Below Range
77 252 252 13 Clock Module Failure
77 81 81 4 Exhaust Back Pressure Sensor Voltage Low
77 81 81 3 Exhaust Back Pressure Sensor Voltage High
77 171 171 Ambient Air Temperature High
77 107 107 1 Air Filter Restriction Pressure Low
77 102 102 1 Turbo Boost Pressure Low
77 174 174 TCO Temperature Above Range (Temporary Code)
77 111 111 Coolant Level High
77 252 252 10 Clock Module Abnormal Rate of Change
77 222 222 14 Anti-Theft Fault Present
77 174 174 1 TCO Temperature Below Range (Temporary Code)
77 105 105 1 Inlet Manifold Temperature Low
77 81 81 12 Exhaust Back Pressure at Rampdown Threshold
77 95 95 1 Fuel Filter Differential Pressure Low
77 251 251 10 Clock Module Abnormal Rate of Change
77 81 Exhaust Back Pressure High
77 100 100 Engine Oil Pressure High
77 81 81 1 Exhaust Back Pressure Low
81 173 173 3 Exhaust Temperature Sensor Input Voltage High
81 411 411 3 EGR Delta Pressure Sensor Circuit Failed High
81 98 98 3 Oil Level Sensor Input Voltage High
81 412 412 3 EGR Temperature Sensor Input Failed High
82 412 412 4 EGR Temperature Circuit Failed Low
82 411 411 4 EGR Delta Pressure Sensor Circuit Failed Low
82 173 173 4 Exhaust Temperature Sensor Input Voltage Low
82 98 4 Oil Level Sensor / Engine Oil Level Sensor (OLS/EOL Sensor) Input Voltage Low
83 412 412 EGR Temperature High
83 411 411 EGR Delta Pressure High
86 108 108 3 Barometric Pressure Sensor Input Voltage High
86 73 73 3 Pump Pressure Circuit Failed High
87 73 73 4 Pump Pressure Sensor Input Voltage is Low
89 95 95 Fuel Restriction High
89 111 111 12 Maintenance Alert Coolant Level Fault

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