P0184
Fuel Temperature Sensor A Circuit Intermittent
Fuel temperature sensing
Generic OBD-II
Low
What it means
P0184 means the signal from fuel temperature sensor "A" is cutting out or jumping around intermittently. The computer uses fuel temperature to fine-tune fueling, so a dropout rarely changes how the car drives. The "intermittent" label points to a wiring or connector fault — a chafed wire or a loose pin — more often than a failed sensor.
Low
Can I keep driving? Generally safe to drive — an intermittent fuel-temperature sensor rarely changes how the car runs, though it can slightly affect fuel metering.
Common symptoms
What you'll notice
- Check-engine light on (often intermittent)
- Occasional inaccurate fuel-temperature readings
- Minor change in fuel economy or performance, if any
Common causes
Most likely first
- Intermittent open or short in the sensor wiring (chafing, flexing)Likely
- Loose or corroded sensor connectorCommon
- Faulty fuel temperature sensor 'A'Common
- ECM fault (rare)Less often
How to diagnose & fix
Work through it in order
- Read freeze-frame data and wiggle-test the sensor harness while watching live data.
- Inspect the connector and wiring for corrosion, chafing, or loose pins.
- Compare the fuel-temperature reading against other temperature sensors on a scan tool.
- Replace the fuel temperature sensor if the signal drops out with good wiring.
- Consider the ECM only after wiring and sensor are ruled out.
FAQ
Quick answers
Is it safe to drive with P0184?+
In most cases yes — the fuel temperature reading only fine-tunes fueling. It's worth fixing so the code doesn't mask a later problem, but it rarely affects drivability.
Can I just clear P0184?+
Because the fault is intermittent it may stay away briefly, but it returns until the loose connection or wiring is repaired.
Related codes
Often seen with P0184
Read & clear P0184 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