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Fuel Temperature Sensor Circuit
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Overview
| CODE | REASON | EFFECT |
| Fault Code: 263 PID: P174 SPN: 174 FMI: 3 LAMP: Yellow SRT: |
High voltage detected at the fuel temperature signal pin. |
Default value used for fuel temperature. Possible low power. |
 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 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
If the sensor is functioning properly, compare the reading to the following table.
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Temperature (°C)
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Temperature [°F]
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Resistance (ohms)
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0
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32
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5k to 7k
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25
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77
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1700 to 2500
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50
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122
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700 to 1000
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75
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167
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300 to 450
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100
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212
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150 to 220
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Refer to Troubleshooting Fault Code t05-263
Last Modified: 26-Oct-2010
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