OBD-II code · Powertrain (generic, extended)
P2A46 Alternative Fuel Tank C Pressure Sensor Circuit
The AFCM detects a generic fault on the pressure sensor of alternative fuel tank C. Tank pressure cannot be monitored reliably.
Is it safe to drive with P2A46?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelyPressure sensor failed
- PossibleWiring or connector fault
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
- P019EAlternative Fuel Tank A Pressure Sensor Circuit
- P2A41Alternative Fuel Tank B Pressure Sensor Circuit
- P2A43Alternative Fuel Tank B Pressure Sensor Circuit Low
- P2A44Alternative Fuel Tank B Pressure Sensor Circuit High
- P2A45Alternative Fuel Tank B Pressure Sensor Circuit Intermittent/Erratic
- P2A47Alternative Fuel Tank C Pressure Sensor Range/Performance
- P2A48Alternative Fuel Tank C Pressure Sensor Circuit Low
- P2A49Alternative Fuel Tank C Pressure Sensor Circuit High
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.