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Engine Coolant Temperature – Data Valid but Above Normal Operational Range – Most Severe Level
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Overview
| CODE | REASON | EFFECT |
| Fault Code: 151 PID: P110 SPN: 110 FMI: 0/0 LAMP: Red SRT: |
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. |
Marine: calibration dependent. |
 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 emission control.
Component Location
The engine coolant temperature sensor is located on 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 the Engine Coolant Temperature Above Normal symptom troubleshooting tree in Troubleshooting and Repair Manual, ISBe and ISB (Common Rail Fuel System) Series Engine, Bulletin 4021272.
Refer to Troubleshooting Fault Code t05-151
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