1)Signal circuit shorted to ground in the harness, sensor or connectors.
1)Replace the engine coolant level sensor.2)Repair or replace the OEM harness.3)Replace the ECM.
Cummins ISM CM875 (2003-06) Fault Code: 195 (3 wire) PID: P111 SPN: 111 FMI: 3/3 Coolant Level Sensor 1 Circuit – Voltage Above Normal or Shorted to High Source. High signal voltage detected at the engine coolant level circuit
Cummins ISM CM875 (2003-06) Fault Code: 195 (2 wire) PID: P111 SPN: 111 FMI: 3/3 Coolant Level Sensor 1 Circuit – Voltage Above Normal or Shorted to High Source. High signal voltage detected at engine coolant level circuit.
Cummins ISM CM875 (2003-06) Fault Code: 187 PID: S232 SPN: 1080 FMI: 4/4 Sensor Supply 2 Circuit – Voltage Below Normal or Shorted to Low Source. Low voltage detected at the sensor supply number 2 circuit.
Cummins ISM CM875 (2003-06) Fault Code: 155 PID: P105 SPN: 105 FMI: 0/0 Intake Manifold 1 Temperature – Data Valid But Above Normal Operating Range – Most Severe Level. Intake manifold air temperature signal indicates intake manifold air temperature above engine protection critical limit.
Cummins ISM CM875 (2003-06) Fault Code: 154 PID: P105 SPN: 105 FMI: 4/4 Intake Manifold 1 Temperature Sensor Circuit – Voltage Below Normal or Shorted to Low Source. Low signal voltage detected at intake manifold air temperature circuit.
Cummins ISM CM875 (2003-06) Fault Code: 153 PID: P105 SPN: 105 FMI: 3/3 Intake Manifold 1 Temperature Sensor Circuit – Voltage Above Normal or Shorted to High Source. High signal voltage detected at intake manifold air temperature circuit.