OBD-II code · Powertrain (generic, extended)
P2A48 Alternative Fuel Tank C Pressure Sensor Circuit Low
Voltage on the pressure sensor signal line of alternative fuel tank C is below the expected window. Wire shorted to ground or sensor short.
Is it safe to drive with P2A48?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelySignal wire shorted to ground
- PossibleInternal sensor short
- 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 C Pressure Sensor, Wiring Harness, Afcm
Related codes
- P01A0Alternative Fuel Tank A Pressure Sensor Circuit Low
- 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
- P2A49Alternative Fuel Tank C Pressure Sensor Circuit High
- P2A4AAlternative Fuel Tank C Pressure Sensor Circuit Intermittent/Erratic
- P2A4BAlternative Fuel Temperature Sensor Circuit
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.