P0180
PPowertrainFuel Temperature Sensor A Circuit Fault
What does this code mean?
Severity : LowP0180 reports a fault in the fuel temperature sensor A circuit. The control module uses fuel temperature to correct the injected quantity, since fuel density changes with heat. It detects an out-of-range or implausible signal, often caused by wiring or by the sensor itself.
Symptoms
- Check engine light on.
- Occasionally harder starting, especially when hot.
- Slight increase in fuel consumption.
- No noticeable symptom in many cases.
Possible causes
- Faulty fuel temperature sensor.
- Wire open or shorted.
- Corroded or loose connector.
- Sensor built into another failing part (pump or rail, depending on vehicle).
- Faulty control module, less often.
Diagnosis and repair
- Locate the sensor on your vehicle.
- Inspect the sensor connector and wiring.
- Compare fuel temperature with intake air temperature on a cold engine.
- Measure sensor resistance with a multimeter, then replace it if needed.
- Clear the code and road test.
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Code
P0180
Category
Powertrain
Prefix
P
Standard
OBD-II / SAE J2012