P0184 Code: Fuel Temperature Sensor A Circuit Intermittent
🟢 Low severity · drivable
Safe to drive. The fuel temperature reading drops in and out, which may cause occasional rough running or hard starts.
What P0184 means
The fuel temperature sensor A signal is dropping in and out, so the computer gets an intermittent reading. The signal may cut out during a bump or when the connector wiggles. This usually points to a loose or corroded connector, a damaged wire, or an internal fault in the sensor.
Symptoms
- Check engine light is on
- Intermittent hard starting
- Occasional rough idle
- Slightly worse fuel economy
Common causes
- most common: Loose or corroded sensor connector
- common: Damaged or chafed wiring
- common: Faulty fuel temperature sensor
- rare: Faulty engine computer (PCM)
How to fix it
| Fix | DIY? | Typical cost |
|---|---|---|
| Clean and tighten the sensor connector and check for corrosion | Yes | $0–20 |
| Repair or replace damaged wiring | Yes | $10–60 |
| Replace the fuel temperature sensor | Yes | $40–150 |
Frequently asked questions
Can I drive with a P0184 code?
Yes. The car is safe to drive, though the intermittent reading may cause occasional rough running until it's fixed.
What does "intermittent" mean here?
The fuel temperature signal cuts in and out instead of being steady, often when the connector is bumped or the wiring flexes.
What is the most common cause of P0184?
A loose, corroded, or damaged connector, with chafed wiring and a faulty sensor as the next most likely causes.
Related codes
P0180
P0180 Code: Fuel Temperature Sensor A Circuit Malfunction
P0181P0181 Code: Fuel Temperature Sensor A Range/Performance
P0182P0182 Code: Fuel Temperature Sensor A Circuit Low
Updated 2026-08. This page is informational and not a substitute for professional diagnosis.