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Cummins ISM CM875 (2003-06) Fault Code: 2385 PID: S027 SPN: 641 FMI: 3 Variable geometry turbocharger actuator driver circuit – voltage above normal or shorted to high source. Open circuit or high voltage detected at turbocharger control valve circuit.
Possible causes:
1)Open circuit in the engine harness or connectors2)Open circuit in the turbocharger control valve3)Signal circuit short to voltage source in the engine harness4)Loose ground connection through the engine wiring harness to the engine block ground terminal. Engine test experience has proven that a loose nut on the engine block stud which results in a poor ground connection at the engine harness ring terminal will cause intermittent Fault Code 2385.
Possible repairs:
1)Replace the turbocharger control valve.2)Replace the ECM.3)Repair or replace the engine harness.
Cummins ISM CM875 (2003-06) Fault Code: 2384 PID: S027 SPN: 641 FMI: 4 Variable geometry turbocharger actuator driver circuit – voltage below normal or shorted to low source. Low voltage detected at turbocharger control valve circuit.
Cummins ISM CM875 (2003-06) Fault Code: 2377 PID: S33 SPN: 647 FMI: 3/3 Fan Control Circuit – Voltage Above Normal or Shorted to High Source. Open circuit or high voltage detected at the fan control circuit.
Cummins ISM CM875 (2003-06) Fault Code: 2376 PID: P412 SPN: 412 FMI: 4/4 Recirculated Exhaust Gas Temperature Sensor Circuit – Voltage Below Normal or Shorted to Low Source. Low signal voltage detected at EGR temperature circuit.
Cummins ISM CM875 (2003-06) Fault Code: 2375 PID: P412 SPN: 412 FMI: 3/3 Exhaust Gas Recirculation Temperature Sensor Circuit – Voltage Above Normal or Shorted to High Source. High signal voltage detected at EGR temperature circuit.
Cummins ISM CM875 (2003-06) Fault Code: 2374 PID: P95 SPN: 1029 FMI: 4/4 Exhaust Gas Pressure Sensor Circuit – Voltage Below Normal or Shorted to Low Source. Low signal voltage detected at the exhaust gas pressure circuit.
Cummins ISM CM875 (2003-06) Fault Code: 2373 PID: P95 SPN: 1209 FMI: 3/3 Exhaust Gas Pressure Sensor Circuit – Voltage Above Normal or Shorted to High Source. High signal voltage detected at the exhaust gas pressure circuit.