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Fuel Temperature Sensor – Engine Protection Circuit
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Overview
| CODE | REASON | EFFECT |
| Fault Code: 261 PID: P174 SPN: 174 FMI: 0/16 LAMP: Yellow SRT: |
High fuel temperature has been detected. Voltage signal at the fuel temperature signal pin indicates fuel temperature above 71°C [160°F]. |
Calibration-dependent progressive power derate and engine shutdown with increasing time after alert. |
 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 fuel supply. The fuel temperature is used by the ECM for the engine protection and fuel heater aids.
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 t05-261
Last Modified: 26-Oct-2010
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