Cumminz

Cummins ISB CM850 (2003-06) Fault Code: 386 PID: SID 212 SPN: 1079 FMI: 3 Sensor Supply Voltage number 1 Circuit – Voltage Above Normal or Shorted to High Source. High voltage detected at sensor supply number 1 circuit. High voltage on the sensor supply line can be caused by an individual sensor supply wire in the harness shorted to battery voltage or a failed ECM power supply. On-Board Diagnostics (OBD) Information (Euro 4 Certified Engines): 1)The ECM illuminates the malfunction indicator lamp (MIL) when the diagnostic runs and fails.2)The ECM turns OFF the malfunction indicator lamp (MIL) after 3 consecutive...

Cummins ISB CM850 (2003-06) Fault Code: 387 PID: SID 221 SPN: 1043 FMI: 3 Accelerator Pedal or Lever Position Sensor Supply Voltage Circuit – Voltage Above Normal or Shorted to High Source. High voltage detected at sensor supply circuit for the accelerator pedal or lever position sensor. This fault is logged when the ECM senses more than +5.25 volts on the accelerator pedal or lever position +5 volt supply line. This can be caused by a short circuit to a voltage source in the OEM harness or a short circuit to an actuator signal circuit that is greater than +5...

Cummins ISB CM850 (2003-06) Fault Code: 412 PID: SID 250 SPN: 608 FMI: 2 SAE J1587/J1922 data link – can not transmit. Communication between the ECM and another device on the J1587/J1922 data link has been lost. This fault occurs whenever the ECM starts communicating with any other device with the J1587/J1922 data link and then can no longer transmit on the data link. Possible causes could be the following: Unplugthe electronic service tool before keying off the ECM, the J1587/J1922 data link having an intermittent electrical problem, and the ECM (or another J1587/J1922 device) tying up communications because of...

Cummins ISB CM850 (2003-06) Fault Code: 415 (Sensor) PID: 100 SPN: 100 FMI: 11 Engine Oil Rifle Pressure – Data Valid but Below Normal Operational Range – Most Severe Level. Oil pressure signal indicates oil pressure is below the engine protection critical limit. Possible causes: 1)Low oil pressure2)Incorrect oil level. Possible repairs: 1)Replace the pressure sensor.

Cummins ISB CM850 (2003-06) Fault Code: 415 (Switch) PID: 100 SPN: 100 FMI: 11 Engine Oil Rifle Pressure – Data Valid but Below Normal Operational Range – Most Severe Level. Oil pressure signal indicates oil pressure is below the engine protection critical limit. Possible causes: 1)Low oil pressure2)Incorrect oil level3)Damaged oil pressure switch4)Engine harness shorted to ground. Possible repairs: 1)Replace the oil pressure switch.2)Repair or replace the engine harness.3)Replace the ECM.