Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
DTC P0182: Fuel Temp Sensor A Circuit Low Input: 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 5 V 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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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.