P0183

Fuel Temperature Sensor A Circuit High

Fuel temperature sensing Generic OBD-II Low

What it means

P0183 means the ECM sees an abnormally high voltage from fuel temperature sensor A, usually from an open circuit, a short to voltage, or a failed sensor. The fuel temperature reading is an input the ECM uses to fine-tune fueling, so most vehicles keep running normally — but it should be repaired so fueling stays accurate and the check-engine light clears.

Low

Can I keep driving? Usually driveable — a fuel-temperature sensor reading high can slightly affect fueling; most vehicles run normally, though some may run rich or lose a little efficiency.

Real-world scan data

Seen in

3,486

scans in the past year

Found in

0.6%

of scans

1.0%

of scans that found faults

Appears alongside · share of P0183 scans

P0113in 29.3% of scans

P0193in 23.3% of scans

P0101in 19.3% of scans

Figures reflect only diagnostic scans recorded through our own apps and tools. Cars are typically scanned because a symptom or warning light prompted it, so these counts describe our scan records — not the incidence of faults in any model, and not the quality, reliability, or safety of any vehicle. No comparison between manufacturers or models is implied. All trademarks belong to their respective owners; no affiliation or endorsement is implied.

Common symptoms

What you'll notice

Check-engine light on
Often no noticeable change in how the car drives
Possible slightly reduced fuel economy or minor performance change
On diesels, fueling may be slightly off

Common causes

Most likely first

Faulty fuel temperature sensor ALikely
Signal wire open or shorted to voltage in the sensor circuitCommon
Corroded or loose connector at the sensorCommon
Poor ground or reference-voltage fault to the sensorLess often
Faulty ECM/PCM (rare)Less often

How to diagnose & fix

Work through it in order

Read freeze-frame data and compare the sensor's live temperature reading against actual fuel temperature at key-on.
Inspect the sensor connector and wiring for an open, a short to voltage, or corrosion.
Verify the sensor's reference voltage and ground are present and clean.
Test the sensor's resistance against the manufacturer's temperature spec; replace it if out of range.
Clear the code and re-test to confirm the reading returns to normal.

FAQ

Quick answers

Is it safe to drive with P0183?+

Generally yes. A fuel-temperature sensor is an input the ECM uses to fine-tune fueling; most vehicles drive normally, though it should still be repaired to keep fueling accurate.

Can I just clear P0183?+

It will return if the sensor or wiring is faulty. Fix the circuit rather than only clearing the code.

Read & clear P0183 yourself

Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.

▶ Get it on Google Play

✓ Verified name — SAE J2012 / ISO 15031-6Guidance reviewed by OBD DashX