Share a caseSign in
FuelSeverity Low: usually safe to drive

P0463Fuel Level Sensor "A" Circuit High

What it means

The fuel level sensor signal voltage is too high: usually the sender, its signal wire or its ground is open.

Symptoms

  • Fuel gauge wrong, stuck or jumping
  • Check engine light (affects EVAP and misfire monitoring)

Common causes

  • Open sender (worn track) or signal wire
  • Poor sender ground
  • Corroded connector at the tank

What to check first

  1. Measure the fuel level sensor resistance through its full travel
  2. Check the wire between the sender and the module for opens and shorts
  3. Check the sender ground
Can I drive with P0463? Usually yes. P0463 rarely affects how the car drives, but it keeps the check engine light on and can fail an emissions test.

Generic OBD-II meaning. Manufacturer-specific meanings and checks can differ; always check the service information for the car.

Cases with P0463 (0)

Share yours

No published cases with this code yet.

Colleagues asking about P0463

Ask for help

Stuck on P0463? Describe what you measured and ask the community.

P0463: questions and answers

What does P0463 mean?

P0463: Fuel Level Sensor "A" Circuit High. The fuel level sensor signal voltage is too high: usually the sender, its signal wire or its ground is open.

What are the symptoms of P0463?

Fuel gauge wrong, stuck or jumping. Check engine light (affects EVAP and misfire monitoring).

What causes P0463?

Open sender (worn track) or signal wire. Poor sender ground. Corroded connector at the tank.

How do you diagnose P0463?

1. Measure the fuel level sensor resistance through its full travel 2. Check the wire between the sender and the module for opens and shorts 3. Check the sender ground

Can I drive with P0463?

Usually yes. P0463 rarely affects how the car drives, but it keeps the check engine light on and can fail an emissions test.