Cummins ISM CM870 (2003-06) Fault Code: 415 PID: P100 SPN: 100 FMI: 1/1 Engine Oil Rifle Pressure - Data Valid But Below Normal Operating Range - Most Severe Level. Oil pressure signal indicates oil pressure is below the engine protection critical limit.

The engine oil pressure sensor measures the pressure of the oil in the oil rifle on the left-hand side of the engine block.

Possible causes:

1)Mechanical failures such as lubricating oil pump, lubricating oil high pressure relief valve, loose lubricating oil filter
2)Breakdown or contamination of lubricating oil
3)Plugged lubricating oil filter.

Cummins ISM CM870 (2003-06) Fault Code: 387 PID: S221 SPN: 1043 FMI: 3/3 Accelerator Pedal Position Sensor Supply Voltage Circuit - shorted high. High voltage detected at sensor supply circuit for the accelerator pedal position sensor.

Cummins ISM CM870 (2003-06) Fault Code: 386 PID: S232 SPN: 1079 FMI: 3/3 Sensor Supply 1 Circuit - Voltage Above Normal or Shorted to High Source. High voltage detected at sensor supply number 1 circuit.

Cummins ISM CM870 (2003-06) Fault Code: 352 PID: S232 SPN: 1079 FMI: 4/4 Sensor Supply 1 Circuit - Voltage Below Normal or Shorted to Low Source. Low voltage detected at sensor supply number 1 circuit.

Cummins ISM CM870 (2003-06) Fault Code: 343 PID: S254 SPN: 629 FMI: 12/12 Electronic Control Module Warning Internal Hardware Failure - Bad Intelligent Device or Component. ECM power supply errors have been detected.

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