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Cummins ISX CM870 (2003-06) Fault Code: 426 PID: S231 SPN: 639 FMI: 2/2 Communication between the electronic control module (ECM) and another device on the SAE J1939 data link has been lost.

Cummins ISX CM870 (2003-06) Fault Code: 428 PID: P097 SPN: 97 FMI: 3/3 Water-in-Fuel Indicator Sensor Circuit - Voltage Above Normal or Shorted to High Source. High voltage detected at the water-in-fuel circuit.

Cummins ISX CM870 (2003-06) Fault Code: 429 PID: P097 SPN: 97 FMI: 4/4 Water-in-Fuel Indicator Sensor Circuit - Voltage Below Normal or Shorted to Low Source. Low voltage detected at the water-in-fuel circuit.

Cummins ISX CM870 (2003-06) Fault Code: 431 (NISS) PID: S230 SPN: 558 FMI: 2/2 Accelerator Pedal Idle Validation Circuit - data incorrect. Voltage detected simultaneously on both idle validation and idle validation off-idle validation switches.

Cummins ISX CM870 (2003-06) Fault Code: 431 (ISS) PID: S230 SPN: 558 FMI: 2/2 Accelerator Pedal Idle Validation Circuit - data incorrect. Voltage detected simultaneously on both idle validation and off-idle validation switches.

Cummins ISX CM870 (2003-06) Fault Code: 431 (SSS) PID: S230 SPN: 558 FMI: 2/2 Accelerator Pedal Idle Validation Circuit - data incorrect. Voltage detected simultaneously on both idle validation and off-idle validation switches.

Cummins ISX CM870 (2003-06) Fault Code: 432 PID: S230 SPN: 558 FMI: 13/13 Accelerator Pedal Idle Validation Circuit - out of calibration. Voltage at idle validation on-idle and off-idle circuit does not match accelerator pedal position.

Cummins ISX CM870 (2003-06) Fault Code: 433 PID: P102 SPN: 102 FMI: 2/2 Intake Manifold Pressure Sensor Circuit - Data Incorrect. An error in the intake manifold pressure signal was detected by the ECM.

Cummins ISX CM870 (2003-06) Fault Code: 434 PID: S251 SPN: 627 FMI: 2/2 Power Lost Without Ignition OFF. Supply voltage to the ECM fell below 6.2 volts momentarily, or the ECM was not allowed to power down correctly (retain battery voltage for 30 seconds after key OFF).

Cummins ISX CM870 (2003-06) Fault Code: 435 PID: P100 SPN: 100 FMI: 2/2 Engine Oil Pressure Sensor Circuit - data incorrect. An error in the engine oil pressure sensor signal was detected by the ECM.