P0183 — Fuel Temperature Sensor A Circuit Low Input
Drive with caution — fix soon.
What P0183 means
This code means the computer is reading an abnormally low voltage from the fuel temperature sensor 'A' circuit, which can make it think the fuel is hotter than it really is. The cause is often a short to ground in the wiring, a failed sensor, or a bad connector. Repairs usually involve fixing the wiring or connector, or replacing the fuel temperature sensor.
Common symptoms
- Check engine light is on
- Slightly reduced fuel economy
- Possible rough idle
- Minor hesitation during acceleration
- Often no obvious driving symptoms
Common causes
- Short to ground in the sensor wiring
- Failed fuel temperature sensor
- Corroded or damaged sensor connector
- Internally shorted sensor element
- Faulty engine control module (rare)
Typical repair cost
$110 – $350
Varies by vehicle and root cause.
Frequently asked questions
Can I keep driving with a P0183 code?
Usually yes, since it rarely affects drivability much. The engine often compensates, but because the sensor reading is off, it's best to have it checked within a week or two to protect fuel economy and emissions.
How much does it cost to fix a P0183 code?
Most repairs run between $110 and $350. Fixing a shorted wire or replacing a connector is on the lower end, while a new fuel temperature sensor costs more depending on your vehicle.
Is a P0183 code serious?
It's a moderate code that usually won't leave you stranded. Still, an inaccurate fuel temperature signal can slightly affect how the engine meters fuel, so it shouldn't be ignored long-term.
What causes a low input reading specifically?
A low input usually means the signal voltage dropped too far, most often from a short to ground in the wiring or a sensor that has failed internally. A technician will test the circuit to tell whether it's the wiring or the sensor itself.