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Fuel Temperature Sensor – Engine Protection Circuit
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Overview
| CODE | REASON | EFFECT |
| Fault Code: 266 PID: P174 SPN: 174 FMI: 0 LAMP: Red SRT: |
Fuel temperature signal indicates the fuel temperature has exceeded the engine protection limit. |
Power derate and possible engine shutdown if engine protection shutdown feature is enabled. |
 Fuel Temperature Sensor Circuit
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Circuit Description
The fuel temperature sensor is used by the electronic control module (ECM) to monitor the temperature of the engine fuel. If the fuel temperature becomes too high and the engine protection is enabled, a derate condition can be incurred, possibly leading to shutdown.
Component Location
The fuel temperature sensor is located on the fuel filter housing.
Shop Talk
Make sure the fuel tanks are adequately filled. The drained fuel heats the fuel in the tank; therefore, keep the fuel tanks at a full level when operating in hot conditions.
Refer to Troubleshooting Fault Code t05-266
Last Modified: 26-Oct-2010
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