| Engine Control Unit (ECU) Diagnostic Trouble Codes |
| Diagnostic Trouble Code |
Display |
Solution |
| ECU 94.3 |
Engine System |
Fuel pressure sensor voltage high. |
| ECU 94.4 |
Engine System |
Fuel pressure sensor voltage low. |
| ECU 94.17 |
Engine System |
Fuel pressure low. |
| ECU 97.3 |
Engine System |
Water separator sensor voltage high. |
| ECU 97.4 |
Engine System |
Water separator sensor voltage low. |
| ECU 97.16 |
Engine Water Separator Full |
Engine power limited. Drain water. |
| ECU 100.4 |
Engine System |
Engine oil pressure sensor voltage low. |
| ECU 100.18 |
Engine Oil Pressure Low |
Check engine oil level. |
| ECU 102.3 |
Engine System |
Intake manifold pressure sensor voltage high. |
| ECU 102.4 |
Engine System |
Intake manifold pressure sensor voltage low. |
| ECU 103.0 |
Engine System |
Turbocharger speed extremely high. Reduce engine speed and load. |
| ECU 103.5 |
Engine System |
Turbocharger speed sensor circuit fault. |
| ECU 103.8 |
Engine System |
Turbocharger speed message fault. |
| ECU 100.1 |
Engine Oil Pressure Low |
Oil Pressure Extremely low. Check oil level. |
| ECU 105.0 |
Engine Air Temperature High |
Reduce engine load. Check cooling system for debris. |
| ECU 105.3 |
Engine System |
Intake manifold air temperature sensor voltage high. |
| ECU 105.4 |
Engine System |
Intake manifold air temperature sensor voltage low. |
| ECU 105.16 |
Engine Air Temperature High |
Intake manifold air temperature high. Reduce engine speed and load. |
| ECU 100.31 |
Engine Oil Pressure |
Unexpected engine oil pressure with engine off. |
| ECU 102.2 |
Engine System |
Intake manifold pressure sensor fault. |
| ECU 103.31 |
Engine System |
Turbocharger speed sensor communication fault. |
| ECU 105.15 |
Engine Air Temperature High |
Intake manifold air temperature high. |
| ECU 107.0 |
Engine Air Filter Restricted |
Clean or replace air filter. |
| ECU 108.2 |
Engine System |
Barometric pressure sensor fault. |
| ECU 110.15 |
Engine Coolant Temperature High |
Reduce engine speed and load. Check cooling system for debris. |
| ECU 110.3 |
Engine System |
Coolant temperature sensor voltage high. |
| ECU 110.4 |
Engine System |
Coolant temperature sensor voltage low. |
| ECU 110.16 |
Engine Coolant Temperature High |
Reduce engine speed and load. Check cooling system for debris. |
| ECU 110.17 |
Engine Coolant Temperature Low |
Allow coolant temperature to increase. |
| ECU 110.0 |
Engine Coolant Temperature High |
Coolant temperature extremely high. Reduce engine load. Check cooling system for debris. |
| ECU 157.3 |
Engine System |
Fuel rail pressure sensor voltage high. |
| ECU 157.4 |
Engine System |
Fuel rail pressure sensor voltage low. |
| ECU 152.14 |
Engine System |
Engine control unit fault. |
| ECU 152.16 |
Engine System |
Engine control unit fault. |
| ECU 157.17 |
Engine System |
Fuel rail pressure low. |
| ECU 158.17 |
Engine System |
Engine control unit fault. |
| ECU 174.3 |
Engine System |
Fuel temperature sensor voltage high. |
| ECU 174.0 |
Fuel Temperature High |
Check cooling system for debris. |
| ECU 189.0 |
Vehicle Controls |
Vehicle identification fault. Engine Speed Derated. |
| ECU 190.0 |
Engine Speed High |
Reduce engine speed. |
| ECU 412.0 |
Engine System |
EGR temperature extremely high. |
| ECU 640.31 |
Engine System |
Engine shutdown command. |
| ECU 1136.0 |
Engine System |
Engine control unit internal temperature high. |
| ECU 1180.0 |
Engine System |
Exhaust temperature high. Reduce engine speed and load. Check cooling system for debris. |
| ECU 2630.0 |
Engine System |
Charge air cooler temperature high. Reduce engine speed and load. Check cooling system for debris. |
| ECU 3509.3 |
Engine System |
Engine control unit sensor supply voltage high. |
| ECU 3509.4 |
Engine System |
Engine control unit sensor supply voltage low. |
| ECU 157.10 |
Engine System |
Fuel rail pressure abnormal fluctuation. |
| ECU 174.4 |
Engine System |
Fuel temperature sensor voltage low. |
| ECU 174.16 |
Fuel Temperature High |
Check cooling system for debris. |
| ECU 237.2 |
Identification System |
Vehicle identification numbers do not match between control units. |
| ECU 237.13 |
Identification System |
Vehicle identification numbers do not match between control units. |
| ECU 237.31 |
Identification System |
Vehicle identification fault. |
| ECU 412.3 |
Engine System |
EGR temperature sensor voltage high. |
| ECU 412.4 |
Engine System |
EGR temperature sensor voltage low. |
| ECU 412.16 |
Engine System |
EGR temperature high. Reduce engine speed and load. |
| ECU 611.3 |
Engine System |
Fuel injector circuit voltage high. |
| ECU 611.4 |
Engine System |
Fuel injector circuit voltage low. |
| ECU 627.1 |
Engine System |
Fuel injector circuits current low. |
| ECU 629.12 |
Engine System |
Engine control unit fault. Restart engine to attempt vehicle recovery. |
| ECU 636.5 |
Engine System |
Camshaft position sensor circuit fault. |
| ECU 636.6 |
Engine System |
Camshaft position sensor circuit fault. |
| ECU 637.2 |
Engine System |
Crankshaft position sensor circuit fault. |
| ECU 637.5 |
Engine System |
Crankshaft position sensor circuit fault. |
| ECU 637.6 |
Engine System |
Crankshaft position sensor circuit fault. |
| ECU 637.7 |
Engine System |
Crankshaft position sensor circuit fault. |
| ECU 637.8 |
Engine System |
Crankshaft position sensor communication fault. |
| ECU 640.11 |
Engine System |
Tracks control communication fault. |
| ECU 641.4 |
Engine System |
Turbocharger actuator supply voltage low. |
| ECU 641.12 |
Engine System |
Turbocharger actuator communication fault. |
| ECU 641.13 |
Engine System |
Turbocharger actuator fault. |
| ECU 641.16 |
Engine System |
Turbocharger actuator temperature high. Reduce engine speed and load. |
| ECU 647.5 |
Fan System |
Engine fan drive circuit fault. |
| ECU 647.7 |
Fan System |
Engine fan drive circuit fault. |
| ECU 651.5 |
Engine System |
Injector #1 circuit current low. |
| ECU 651.6 |
Engine System |
Injector #1 circuit current high. |
| ECU 651.7 |
Engine System |
Injector #1 fuel flow low. |
| ECU 652.5 |
Engine System |
Injector #2 circuit current low. |
| ECU 652.6 |
Engine System |
Injector #2 circuit current high.. |
| ECU 652.7 |
Engine System |
Injector #2 fuel flow low. |
| ECU 653.5 |
Engine System |
Injector #3 circuit current low. |
| ECU 653.6 |
Engine System |
Injector #3 circuit current high. |
| ECU 653.7 |
Engine System |
Injector #3 fuel flow low. |
| ECU 654.5 |
Engine System |
Injector #4 circuit current low. |
| ECU 654.6 |
Engine System |
Injector #4 circuit current high. |
| ECU 654.7 |
Engine System |
Injector #4 fuel flow low. |
| ECU 655.5 |
Engine System |
Injector #5 circuit current low. |
| ECU 655.6 |
Engine System |
Injector #5 circuit current high. |
| ECU 655.7 |
Engine System |
Injector #5 fuel flow low. |
| ECU 656.5 |
Engine System |
Injector #6 circuit current high. |
| ECU 656.6 |
Engine System |
Engine system not operating correctly. Reference diagnostic procedure in Technical Manual. |
| ECU 656.7 |
Engine System |
Injector #6 fuel flow low. |
| ECU 1110.31 |
Engine System |
Engine Protection Shutdown. |
| ECU 1136.16 |
Engine System |
Engine control unit internal temperature high. |
| ECU 1180.16 |
Engine System |
Exhaust temperature high. |
| ECU 1347.3 |
Engine System |
High pressure fuel pump control valve voltage high. |
| ECU 1347.5 |
Engine System |
High pressure fuel pump control valve circuit current low. |
| ECU 1347.7 |
Engine System |
High pressure fuel pump not able to meet required pressure. |
| ECU 2630.3 |
Engine System |
Charge air cooler outlet temperature sensor voltage high. |
| ECU 2630.4 |
Engine System |
Charge air cooler outlet temperature sensor voltage low. |
| ECU 2630.16 |
Engine System |
Charge air cooler outlet temperature high. Reduce engine speed and load. Check cooling system for debris. |
| ECU 2659.2 |
Engine System |
EGR sensor circuit fault. |
| ECU 2659.15 |
Engine System |
EGR sensor circuit fault. |
| ECU 2659.17 |
Engine System |
EGR sensor circuit fault. |
| ECU 2790.16 |
Engine System |
Turbocharger outlet temperature high. Reduce engine speed and load. |
| ECU 2791.3 |
Engine System |
EGR valve position sensor voltage high. |
| ECU 2791.4 |
Engine System |
EGR valve position sensor voltage low. |
| ECU 2791.7 |
Engine System |
EGR valve position fault. |
| ECU 2791.13 |
Engine System |
EGR valve position fault. |
| ECU 2795.7 |
Engine System |
Turbocharger actuator not reaching expected position. |
| ECU 3510.3 |
Engine System |
Engine control unit sensor supply voltage high. |
| ECU 3510.4 |
Engine System |
Engine control unit sensor supply voltage low. |
| ECU 3511.3 |
Engine System |
Engine control unit sensor supply voltage high. |
| ECU 3511.4 |
Engine System |
Engine control unit sensor supply voltage low. |
| ECU 3512.3 |
Engine System |
Engine control unit sensor supply voltage high. |
| ECU 3512.4 |
Engine System |
Engine control unit sensor supply voltage low. |
| ECU 3513.3 |
Engine System |
Engine control unit sensor supply voltage high. |
| ECU 3513.4 |
Engine System |
Engine control unit sensor supply voltage low. |
| ECU 152.12 |
Engine system |
Engine control unit fault. |
| ECU 412.15 |
Engine System |
Fuel temperature high. Check cooling system for debris. |
| ECU 636.2 |
Engine System |
Camshaft position sensor fault. |
| ECU 636.8 |
Engine System |
Camshaft position sensor communication fault. |
| ECU 636.10 |
Engine System |
Camshaft position sensor fault. |
| ECU 637.10 |
Engine System |
Camshaft position sensor fault. |
| ECU 651.2 |
Engine System |
Injector #1 fault. |
| ECU 651.13 |
Engine System |
Injector #1 calibration fault. |
| ECU 652.2 |
Engine System |
Injector #2 fault. |
| ECU 652.13 |
Engine System |
Injector #2 calibration fault. |
| ECU 653.2 |
Engine System |
Injector #3 fault. |
| ECU 653.13 |
Engine System |
Injector #3 calibration fault. |
| ECU 654.2 |
Engine System |
Injector #4 fault. |
| ECU 654.13 |
Engine System |
Injector #4 calibration fault. |
| ECU 655.2 |
Engine System |
Injector #5 fault. |
| ECU 655.13 |
Engine System |
Injector #5 calibration fault. |
| ECU 656.2 |
Engine System |
Injector #6 fault. |
| ECU 656.13 |
Engine System |
Injector #6 calibration fault. |
| ECU 1075.5 |
Fuel Supply System |
Fuel lift pump current low. |
| ECU 1075.12 |
Fuel Supply System |
Fuel lift pump fault. |
| ECU 1172.3 |
Engine System |
Turbocharger inlet temperature sensor voltage high. |
| ECU 1172.4 |
Engine System |
Turbocharger inlet temperature sensor voltage low. |
| ECU 1568.2 |
Engine System |
Engine system not operating correctly. |
| ECU 1569.31 |
Engine Power Derated |
Engine power derate condition exists. |
| ECU 1639.1 |
Fan System |
Engine fan speed low. Check fan drive system. |
| ECU 1639.16 |
Fan Speed High |
Engine fan speed high. Check fan drive system. |
| ECU 1639.18 |
Fan Speed Low |
Engine fan speed low. Check fan drive system. |
| ECU 2005.9 |
Communication System |
Armrest control unit communication fault. |
| ECU 2005.14 |
Communication System |
Armrest control unit communication fault. |
| ECU 2005.19 |
Communication System |
Armrest control unit communication fault. |
| ECU 2030.9 |
Communication System |
Engine system not operating correctly. |