Cummins ISC CM2150 (2007-09) Fault Code: 195 (2 wire sensor) PID: 111 SPN: 111 FMI: 3 Coolant Level Sensor 1 Circuit – Voltage Above Normal or Shorted to High Source. High signal voltage detected at engine coolant level circuit.

Verify the electronic control module (ECM) calibration is correct. Check the calibration revision history found on QuickServe® Online for applicable fixes to the calibration stored in the ECM. If necessary, recalibrate the ECM.

Possible causes:

1)Open return or signal circuit in the harness, connectors, or sensor
2)Signal wire shorted to sensor supply or battery voltage.

Possible repairs:

1)Replace the engine coolant level sensor.
2)Repair or replace the OEM harness.
3)Replace the ECM.