1)Signal shorted to ground in the engine harness2)Signal shorted to return or ground in the sensor.
1)Replace the engine coolant temperature sensor.2)Replace the ECM.3)Repair or replace the engine harness.
Cummins ISX CM870 (2003-06) Fault Code: 212 PID: P175 SPN: 175 FMI: 3/3 Engine Oil Temperature Sensor 1 Circuit – Voltage Above Normal or Shorted to High Source. High signal voltage or an open circuit detected at the engine oil temperature circuit.
Cummins ISX CM870 (2003-06) Fault Code: 197 PID: P111 SPN: 111 FMI: 1/18 Coolant Level – Data Valid But Below Normal Operating Range – Moderately Severe Level. Low engine coolant level detected.
Cummins ISX CM870 (2003-06) Fault Code: 196 (3 wire) PID: P111 SPN: 111 FMI: 4/4 Coolant Level Sensor 1 Circuit – Voltage Below Normal or Shorted to Low Source. Low signal voltage detected at the engine coolant level circuit.
Cummins ISX CM870 (2003-06) Fault Code: 196 (2 wire) PID: P111 SPN: 111 FMI: 4/4 Coolant Level Sensor 1 Circuit – Voltage Below Normal or Shorted to Low Source. Low signal voltage detected at the engine coolant level circuit.
Cummins ISX CM870 (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 ISX CM870 (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.