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FAULT CODE 151

Engine Coolant Temperature - Data Valid But Above Normal Operating Range - Most Severe Level

Overview


CODE

REASON

EFFECT

Fault Code: 151

Engine Coolant Temperature - Data Valid But Above Normal Operating Range -

Calibration dependent progressive power

PID:

Most Severe Level. Engine coolant temperature signal indicates engine coolant

derate and engine shutdown with

SPN: 110

temperature above engine protection critical limit.

increasing time after alert.

FMI: 0



LAMP: Red



SRT:



Engine Coolant Temperature 1 Sensor Circuit


Circuit Description


The engine coolant temperature 1 sensor is used by the engine 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 1 sensor is located on the thermostat housing. Use the following procedure for a detailed component location view. Refer to

Procedure 100-002 in Section E.


Shop Talk


This fault code indicates that coolant temperature has exceeded the engine protection limits for high coolant temperature. Refer to Troubleshooting Fault Code t05-151.

Last Modified: 28-Nov-2012

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