P0463: Fuel Level Sensor Circuit High Input
Quick Answer
Safe to drive (short-term)
P0463 means the signal from the fuel level sender is higher than the engine computer accepts as a real reading. The usual cause is an open circuit, a poor ground or a failed sender. Depending on the car, the fuel gauge may stick at full, drop to empty or stop moving. It does not affect the engine, but the gauge cannot be trusted.
- Severity
- Low · Fuel System
- Estimated repair cost
- From €40 to €900+, varies by vehicle
€40 or €900, depending on your car.
- Clean connector or repair sender wiring and ground€40–€140
- Replace tank sender with the tank dropped€450–€900
A scan shows whether P0463 is really stored on your car, which codes sit next to it and how urgent each one is.
A scan needs a Bluetooth OBD2 adapter (Bluetooth LE on iPhone), about €25-60; the built-in demo runs without one. See which adapter to buy
What does P0463 mean?
P0463 is a fuel system-related diagnostic trouble code classified as low severity.
What are the symptoms of P0463?
- Fuel gauge stuck at full or at empty, or not moving at all
- Gauge never drops, then falls fast or reads empty later
- Check engine light on, sometimes only the fuel warning behaves oddly
- Low-fuel warning may never appear
- Gauge worked normally until a fill-up or a bump
- Engine runs fine
What causes P0463?
Fuel level sender or float worn out or stuck
: high
Open circuit in the sender wiring or a corroded connector
: high
Poor sender ground connection
: medium
Signal wire shorted to a voltage source
: low
Fault in the instrument cluster reading the signal
: low
Is it safe to drive with P0463?
Generally yes, for short-term driving. The engine runs normally, but you lose a trustworthy fuel gauge. The needle may sit on full while the tank empties. Reset your trip meter at each fill-up and refuel by distance until it is fixed, so you do not run dry.
How do you diagnose P0463?
- Check the gauge behaviour first. Does it sit at full from the moment you start the car, or does it move and then stick? A gauge that moves points at a worn sender track, one that never moves points at an open circuit
- Read the code and note whether other fuel level codes are stored with it
- Find the sender connector. On many cars the sender is part of the fuel pump module on top of the tank, with a plug under the rear seat or a floor panel
- With the ignition off, inspect the plug for corrosion or a pushed-out pin and check the ground for resistance
- Use the car's wiring diagram to check the signal wire for an open circuit and for any short to voltage
- Compare sender resistance with the car's specification as you move the float through its range, if the sender can be reached
- If the sender and wiring pass, have the instrument cluster checked. A generic reader cannot test the cluster
How much does P0463 cost to fix?
| Repair | Parts Cost | Labor Cost | Total Estimate | DIY Difficulty |
|---|---|---|---|---|
| Clean connector or repair sender wiring and ground | €0–€20 | €40–€120 | €40–€140 | Moderate |
| Extended diagnosis of the sender circuit with wiring diagram | €0–€0 | €60–€130 | €60–€130 | Professional |
| Replace fuel level sender or in-tank fuel pump module | €100–€350 | €100–€450 | €200–€800 | Professional |
| Replace tank sender with the tank dropped | €100–€350 | €350–€550 | €450–€900 | Professional |
Prices estimated as of October 2026. Costs vary by region, vehicle, and shop.
Related diagnostic codes
Common questions about P0463
- Why is my fuel gauge stuck with P0463?
- An open circuit in the sender or its wiring drives the signal to the top of its range. On many cars the gauge then sits at full, on others it drops to empty. The gauge shows what the sender circuit reports, so check the plug, ground and sender.
- Do I need a new fuel pump?
- Not always. The sender is usually part of the pump module, so the whole module is often replaced, but a corroded plug or a poor ground can be the cause and costs far less.
- How do I know how much fuel I have meanwhile?
- Reset the trip meter at every fill-up and use your typical range per tank. Refuel well before you reach it.
- Will P0463 fail an inspection?
- The lit warning lamp can fail it, depending on the national rules.
- Can a bad cluster cause P0463?
- It can, but it is less common than a sender or wiring fault, so test those first.