Cummins ISB CM850 (2003-06) Fault Code: 294 PID: 441 SPN: 441 FMI: 4 Auxiliary Temperature Sensor Input 1 Circuit – Voltage Below Normal, or Shorted to Low Source. Low signal voltage detected at OEM auxiliary temperature circuit.
Possible causes:
1)Signal shorted to ground in the harness.
2)Signal shorted to return or ground in the sensor.
Possible repairs:
1)Replace the OEM temperature sensor.
2)Repair or replace the OEM harness.
3)Replace the ECM.
Cummins ISB CM850 (2003-06) Fault Code: 293 PID: 441 SPN: 441 FMI: 3 Auxiliary Temperature Sensor Input 1 – Voltage Above Normal, or Shorted to High Source. High signal voltage or open circuit detected at the OEM auxiliary temperature circuit.
Cummins ISB CM850 (2003-06) Fault Code: 292 PID: 441 SPN: 441 FMI: 14 Auxiliary Temperature Sensor Input 1 – Special Instructions.
Cummins ISB CM850 (2003-06) Fault Code: 291 PID: SID 248 SPN: 625 FMI: 9 Proprietary Datalink Error (OEM/Vehicle Datalink) ? Abnormal Update Rate. The ECM cannot communicate with the immobilizer anti-theft system.
Cummins ISB CM850 (2003-06) Fault Code: 288 PID: 29 SPN: 974 FMI: 19 SAE J1939 Multiplexing Remote Accelerator Pedal or Lever Data Error – Received Network Data Error. The OEM vehicle electronic control unit (VECU) detected a fault with the remote accelerator.
Cummins ISB CM850 (2003-06) Fault Code: 287 PID: 91 SPN: 91 FMI: 19 SAE J1939 Multiplexing Accelerator Pedal or Lever Sensor System Error – Received Network Data Error. The OEM vehicle electronic control unit (VECU) detected a fault with its accelerator pedal.
Cummins ISB CM850 (2003-06) Fault Code: 286 PID: SID 231 SPN: 639 FMI: 13 SAE J1939 Multiplexing Configuration Error – Out of Calibration. The ECM expected information from a multiplexed device but only received a portion of the necessary information.
