OBD-II code · Powertrain (generic, extended)
P2A44 Alternative Fuel Tank B Pressure Sensor Circuit High
Voltage on the pressure sensor signal line of alternative fuel tank B is above the expected window. Wire shorted to B+ or sensor open.
Is it safe to drive with P2A44?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelySignal wire shorted to B+
- PossibleOpen pressure sensor
- Less likelyConnector pins corroded - high contact resistance
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 1–4 h
- Emissions test
- Likely to fail
- Parts involved
- Alt Fuel Tank B Pressure Sensor, Wiring Harness, Afcm
Related codes
- P01A1Alternative Fuel Tank A Pressure Sensor Circuit High
- P2A49Alternative Fuel Tank C Pressure Sensor Circuit High
- P2A41Alternative Fuel Tank B Pressure Sensor Circuit
- P2A42Alternative Fuel Tank B Pressure Sensor Range/Performance
- P2A43Alternative Fuel Tank B Pressure Sensor Circuit Low
- P2A45Alternative Fuel Tank B Pressure Sensor Circuit Intermittent/Erratic
- P2A46Alternative Fuel Tank C Pressure Sensor Circuit
- P2A47Alternative Fuel Tank C Pressure Sensor Range/Performance
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.