P2A44Alternative Fuel Tank B Pressure Sensor Circuit High
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- How the car detects it
- The counterpart to P2A43: the voltage on the tank B pressure sensor signal sits above its valid range. TransEco, for the tank A sensor of its gas conversions, names an open sensor or a short to power as the cause of the High code, which matches the usual pull-up layout of such inputs where a broken signal or ground wire drives the reading upward. A seemingly overfull cylinder is the risk here: the gauge may stay at full and the module may keep drawing on tank B as if gas were left, until the engine stumbles. No manufacturer lists P2A44 publicly, and the tank A variant P01A1 appears in Ford's 2014 Boss 302S code list. Start the check with the sensor ground and the plug, then measure signal voltage with the system depressurised.
- What you may notice
- Check engine light
- Gauge stuck at full for tank B
- Stumbling when tank B actually runs empty
- Likely causes
- LikelySensor ground or signal wire open
- PossibleSignal wire shorted to 5 V or battery voltage
- PossibleTank B sensor faulty internally
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Hard · Usually a job for a workshop.Typical cost: €100 – €700
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.