P0463 — P0463 — Fuel Level Sensor "A" Circuit High Input
Can drive — fix at your convenience.
What P0463 means
P0463 means the computer is seeing a higher-than-normal signal from the fuel level sensor inside your tank. This is usually an electrical issue rather than an engine problem. The main effect is an inaccurate fuel gauge.
Common symptoms
- Fuel gauge reading full or higher than it should
- Fuel gauge stuck or jumping around
- Check engine light on
- Low-fuel warning not coming on when it should
- Inaccurate range/distance-to-empty estimate
Common causes
- Faulty fuel level sensor / sending unit in the tank
- Open or high-resistance wiring to the sensor
- Corroded or loose connector at the fuel pump module
- Damaged float arm inside the tank
- Poor ground connection in the sensor circuit
- Rarely, a faulty instrument cluster or PCM
Typical repair cost
$80 – $500
Varies by vehicle and root cause.
Frequently asked questions
Can I drive with a P0463 code?
Yes, it's usually safe to drive. The catch is that your fuel gauge may be unreliable, so track your mileage and refuel before you risk running empty.
How much does it cost to fix P0463?
A simple wiring or connector repair can be as low as $80-$150. Replacing the fuel level sensor or the whole sending unit usually runs $200-$500 because the tank often has to be accessed.
Is P0463 serious?
It's a low-severity code for your engine, but it's annoying and can leave you stranded if you run out of fuel by trusting a bad gauge. It's worth fixing for peace of mind.
Why is my fuel gauge wrong with P0463?
The sensor that measures fuel in your tank is sending a faulty high signal, so the gauge can't show the real level. Until it's repaired, rely on your trip odometer to estimate when to fill up.