P0463 Fuel Level Sensor Circuit High Input
What does P0463 mean?
P0463 — Fuel Level Sensor Circuit High Input. This is an OBD-II diagnostic trouble code a scanner retrieves when your vehicle's computer detects fuel level sensor circuit high input. The level of risk depends on how the vehicle is currently running and how long you've been driving with the light on.
Common causes of P0463
- Faulty fuel level sensor in the tank
- Shorted fuel sender wiring
- Poor connector contact or corrosion
- Floating fuel gauge sender arm
- PCM or cluster fault
How to fix P0463
- Inspect the fuel sender wiring and connector
- Read the fuel level input on an OBD-II scanner
- Test the sender resistance while moving the float arm
- Check for a stuck or broken float
- Replace the fuel level sensor if readings are erratic or stuck high