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Home >> Hyundai >> 2004 >> Santa Fe Base, Standard >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System Diagnosis (2.4L) (1 Of 2) >> DTC Troubleshooting Procedures >> DTC P0182: Fuel Temp Sensor A Circuit Low Input >> General Information >> General Description
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General Information: General Description

The fuel temperature sensor is located in the fuel tank for detecting the fuel tank temperature.

The fuel temperature sensor uses a thermistor whose resistance changes with the temperature.

The electrical resistance of the fuel temperature sensor decreases as the temperature increases, and increases as the temperature decreases.

The reference 5V in the PCM is supplied to the fuel temperature sensor via a resistor in the PCM. The resistor in the PCM and the thermistor in the fuel temperature sensor are connected in series. When the resistance value of the thermistor in fuel temperature sensor changes with variations in fuel tank temperature, the output voltage also changes.

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