OBD-II code · Powertrain (generic)
P0463 Fuel Level Sensor A Circuit High
Fuel-level sensor A above upper plausibility — open signal or short to B+. Wiring faults of this kind typically come from chafing, water ingress at connector seals, or pin push-back — a wiggle test on the harness while the code is active often confirms the location.
Is it safe to drive with P0463?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyOpen signal line
- Less likelyConnector pins corroded - high contact resistance
- Less likelySupply wire pinched against B+ source
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.7–3 h
- Emissions test
- Usually unaffected
- Parts involved
- Fuel Level Sensor
Related codes
- P0460Fuel Level Sensor A Circuit
- P2068Fuel Level Sensor B Circuit High
- P25DAFuel Level Sensor C Circuit High
- P0461Fuel Level Sensor A Circuit Range/Performance
- P0462Fuel Level Sensor A Circuit Low
- P0464Fuel Level Sensor A Circuit Intermittent
- P0465EVAP Purge Flow Sensor Circuit
- P0466EVAP Purge Flow Sensor Circuit Range/Performance
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.