P2A60Alternative Fuel Tank B Level Sensor Range/Performance
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Needs a drive cycle to confirm a fix
- How the car detects it
- P2A60 flags a tank B level that is electrically valid but does not behave like a real fuel quantity: it fails to drop while gas is used from tank B, does not climb after filling, or swings wildly although the tank is at rest. Roush documents the stuck logic for its propane primary sender as P25B0, set when the value stays put over a considerable distance. On LPG the cause is often mechanical, a float arm bent or jammed inside the tank; with CNG, where the level is calculated, a drifting pressure sensor or a cold fill can mislead it, and GM notes that its gauge may read below full after refuelling in the cold. No manufacturer publishes P2A60 or its limits; CARB asks for rationality checks on such inputs. Compare the sender with the tank's own dial gauge.
- What you may notice
- Check engine light after several trips
- Gas gauge does not move as fuel is used
- Unexpected running out of gas
- Likely causes
- LikelyFloat arm in tank B bent or jammed (LPG)
- PossiblePressure or temperature input behind the calculated level drifting (CNG)
- RareContact resistance shifting the sender signal
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Medium · Usually a job for a workshop.Typical cost: €80 – €700
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.