OBD-II code · Powertrain (generic, extended)
P2A63 Alternative Fuel Tank B Level Sensor Circuit Intermittent/Erratic
The level sensor signal of alternative fuel tank B drops out or jumps intermittently. Loose connector or vibration-sensitive contact.
Is it safe to drive with P2A63?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelySensor connector not seated
- PossibleNoisy ground reference
- Less likelyConnector with intermittent contact under vibration
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 0.5–3 h
- Emissions test
- Usually unaffected
- Parts involved
- Alt Fuel Tank B Level Sensor, Wiring Harness, Afcm
Related codes
- P01B3Alternative Fuel Tank A Level Sensor Circuit Intermittent/Erratic
- P2A68Alternative Fuel Tank C Level Sensor Circuit Intermittent/Erratic
- P2A60Alternative Fuel Tank B Level Sensor Range/Performance
- P2A61Alternative Fuel Tank B Level Sensor Circuit Low
- P2A62Alternative Fuel Tank B Level Sensor Circuit High
- P2A64Alternative Fuel Tank C Level Sensor Circuit
- P2A65Alternative Fuel Tank C Level Sensor Range/Performance
- P2A66Alternative Fuel Tank C Level Sensor Circuit Low
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.