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)Replace the engine coolant level sensor.
2)Replace the ECM.
3)Repair or replace the OEM harness.
PACCAR PX-8 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.
PACCAR PX-8 CM2150 (2007-09) Fault Code: 155 PID: 105 SPN: 105 FMI: 0 Intake Manifold 1 Temperature – Data Valid but Above Normal Operational Range – Most Severe Level. Intake manifold air temperature signal indicates intake manifold air temperature above engine protection critical limit.
PACCAR PX-8 CM2150 (2007-09) Fault Code: 154 PID: 105 SPN: 105 FMI: 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.
PACCAR PX-8 CM2150 (2007-09) Fault Code: 153 PID: 105 SPN: 105 FMI: 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.
PACCAR PX-8 CM2150 (2007-09) Fault Code: 151 PID: 110 SPN: 110 FMI: 0 Engine Coolant Temperature – Data Valid But Above Normal Operational Range – Most Severe Level. Engine coolant temperature signal indicates engine coolant temperature above engine protection critical limit.
PACCAR PX-8 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.