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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.

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.

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