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Engine Coolant Temperature – Data Valid but Above Normal Operational Range – Moderately Severe Level
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Overview
| CODE | REASON | EFFECT |
| Fault Code: 146 PID: P110 SPN: 110 FMI: 0/16 LAMP: Amber SRT: |
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. |
Automotive: Progressive power derate increasing in severity from time of alert. Marine: calibration dependent. |
 Engine Coolant Temperature Sensor Circuit
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Circuit Description
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.
Component Location
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.
Shop Talk
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.
Refer to Troubleshooting Fault Code t05-146
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