P0182
Fuel Temperature Sensor A Circuit Low
Fuel & air metering (fuel temperature)
Generic OBD-II
Low
What it means
P0182 means the fuel temperature sensor 'A' signal is too low — an out-of-range reading typically caused by a short to ground, an open circuit, or a failed sensor. The ECM uses fuel temperature for fine fueling trims, so it falls back to a substitute value; the car usually keeps running normally with only minor cold-start or economy effects until the sensor is repaired.
Low
Can I keep driving? Usually still drivable — this is a temperature-sensor signal fault; the ECM substitutes a value, so expect at most minor fueling or cold-start effects.
Common symptoms
What you'll notice
- Check-engine light on
- Often no noticeable driving symptom
- Minor cold-start or fuel-economy effects
- Fuel temperature reads implausibly high/hot on a scan tool
Common causes
Most likely first
- Faulty fuel temperature sensor 'A'Likely
- Signal wire shorted to ground or an open circuitCommon
- Corroded or dirty connector terminalsCommon
- Poor sensor groundLess often
- Faulty PCM (rare — confirm the sensor and wiring first)Less often
How to diagnose & fix
Work through it in order
- Read the live fuel-temperature value and compare it to actual temperature — a circuit-low fault reads out of range.
- Inspect the sensor connector and wiring for a short to ground, an open, or corrosion.
- Check the sensor's ground and reference voltage with the key on.
- Back-probe the circuit to decide whether the sensor or the wiring is at fault.
- Replace the fuel temperature sensor if it reads out of range with good wiring, then clear and re-test.
FAQ
Quick answers
Is it safe to drive with P0182?+
In most cases yes. It's a temperature-sensor signal fault and the ECM falls back to a default value, so drivability is usually normal. Fix it to keep fueling accurate.
Can I just clear P0182?+
It returns until the sensor or wiring is repaired. Clearing alone only resets the light temporarily.
Related codes
Often seen with P0182
Read & clear P0182 yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.
✓ Verified name — SAE J2012 / ISO 15031-6Guidance reviewed by OBD DashX