Verify the 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, calibrate the ECM.
Possible repairs:
1)Replace the engine coolant temperature sensor.
2)Replace the ECM.
3)Replace the engine harness.
PACCAR PX-6 CM2150 (2007-09) Fault Code: 146 PID: 110 SPN: 110 FMI: 0 Engine Coolant Temperature – Data Valid But Above Normal Operational Range – Moderately Severe Level. Engine coolant temperature is above engine protection warning limit.
PACCAR PX-6 CM2150 (2007-09) Fault Code: 145 PID: 110 SPN: 110 FMI: 4 Engine Coolant Temperature 1 Sensor Circuit – Voltage Below Normal or Shorted to Low Source. Low signal voltage detected at engine coolant temperature circuit.
PACCAR PX-6 CM2150 (2007-09) Fault Code: 144 PID: 110 SPN: 110 FMI: 3 Engine Coolant Temperature 1 Sensor Circuit – Voltage Above Normal or Shorted to High Source. High signal voltage or open circuit detected at engine coolant temperature circuit.
PACCAR PX-6 CM2150 (2007-09) Fault Code: 143 PID: 100 SPN: 100 FMI: 1 Engine Oil Rifle Pressure – Data Valid but Below Normal Operational Range – Moderately Severe Level. Engine oil pressure signal indicates engine oil pressure is below the engine protection warning limit.
PACCAR PX-6 CM2150 (2007-09) Fault Code: 141 PID: 100 SPN: 100 FMI: 4 Engine Oil Rifle Pressure 1 Sensor Circuit – Voltage Below Normal or Shorted to Low Source. Low signal voltage detected at the engine oil pressure circuit.
PACCAR PX-6 CM2150 (2007-09) Fault Code: 135 PID: 100 SPN: 100 FMI: 3 Engine Oil Rifle Pressure 1 Sensor Circuit – Voltage Above Normal or Shorted to High Source. High signal voltage detected at the engine oil pressure circuit.