P0182Fuel Temperature Sensor A Circuit Low
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Needs a drive cycle to confirm a fix
- How the car detects it
- Fuel temperature sensor A is an NTC thermistor: the hotter the fuel, the lower its resistance and signal voltage. On diesels it sits in the injection pump, rail or return line; on Ford petrol direct-injection engines it is built into the rail pressure sensor, and GM uses digital rail temperature sensors on its direct-injection engines. P0182 means the signal is below its valid range – with an NTC that points to a short to ground or an internally shorted sensor, and the control module would read about 150 °C. Limits: Ford diesel below 0.095 V, Ford petrol below 0.12 V for 5 s, GM diesel below 50 Ω (two trips), GM 6.6 litre below 0.60 V for 5 s, Saab EDC16 below 0.23 V for 0.6 s with a substitute value of 50 °C. Genuinely hot fuel within the valid range is P0168 instead.
- What you may notice
- Check engine light on
- Fuel temperature in scan data implausibly high (about 150 °C)
- Possibly cold-start problems
- Likely causes
- LikelySignal wire shorted to ground (chafing)
- LikelySensor shorted internally
- PossibleMoisture or corrosion in the connector
- RareEngine control module
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Medium · Usually a job for a workshop.Typical cost: €50 – €350
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.