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
Possible causes:
1)Open return circuit in the engine harness, connectors, or sensor
2)Signal circuit shorted to sensor supply or battery voltage
3)Sensor supply circuit shorted to battery voltage.
Possible repairs:
1)Replace the engine coolant level sensor.
2)Repair or replace the OEM harness.
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