Engine Coolant Temperature – Data Valid but Above Normal Operational Range – Moderately Severe Level
|Fault Code: 146
Engine Coolant Temperature – Data Valid but Above Normal Operational Range – Moderately Severe Level. Engine coolant temperature signal indicates engine coolant temperature is above engine protection warning limit.
Marine: calibration dependent.
Engine Coolant Temperature Sensor Circuit
The engine coolant temperature sensor is used by the Electronic Control Module (ECM) to monitor the engine coolant temperature. The ECM monitors the voltage on the signal pin and converts this to a temperature value. The engine coolant temperature value is used by the ECM for the engine protection system and engine emissions control.
The engine coolant temperature sensor is located on the exhaust side of the engine near the thermostat housing. Refer to Procedure 100-002 for a detailed component location view.
This fault code indicates that coolant temperature has exceeded the engine protection limits for high coolant temperature. Refer to Engine Coolant Temperature Above Normal symptom troubleshooting tree.