Trouble code · Powertrain · Generic (all makes)

P0463 Fuel Level Sensor 'A' Circuit High

The signal from the fuel level sensor in the tank is higher than it should be, so the computer can't trust the fuel gauge reading.

Safe to drive?
Usually OK to drive
Get it checked soon
Scanner you need
Any OBD2 scanner
Even a basic code reader shows it
NHTSA complaints quoting it
53
Vehicle complaints, 2015–2025

Common causes

  • Faulty fuel level sender (float arm) in the tank
  • Open or damaged wiring
  • Corroded connector
  • Faulty instrument cluster

Symptoms

  • Fuel gauge stuck on empty or full, or jumping around
  • Low-fuel warning that's wrong

Can I drive with it?

Safe to drive, but don't trust the gauge – track your mileage and refuel early so you don't run out.

Tip: The sender is part of the fuel pump assembly on most cars, so the fix often means replacing the whole assembly.

Which scanner reads it?

Any OBD2 scanner reads it. Live data showing the fuel level percentage lets you watch the sender while you fill up.

Budget tools like the ANCEL AD310 read it; tools with live data and graphing – like the BlueDriver or OBDLink MX+ – help you find the cause. Not sure which fits you? Try the Find My Scanner quiz.

In the data

Of the vehicle complaints owners filed with NHTSA from 2015 to 2025, 53 quote P0463 – most often from Nissan, Ram, Hyundai owners. Complaints lean toward serious problems, so treat this as a sign of how often the code turns up in real reports, not how often cars get it.

Both sources are compared on the Trends page.

General information to help you understand a code – not a diagnosis. Your car’s service information or a qualified mechanic has the final word. See how we research.