OBD-II code · Powertrain (generic, extended)
P2A8C Alternative Fuel Vaporizer B Performance
The AFCM detects that vaporizer B does not heat the alternative fuel from liquid to vapour within the calibrated time and temperature window. Liquid carry-over to the rail is possible.
Is it safe to drive with P2A8C?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelyCoolant flow through vaporizer reduced
- PossibleHeat exchanger surface fouled
Repair at a glance
- Difficulty
- Hard
- DIY friendly
- Best left to a mechanic
- Typical labour
- 2–6 h
- Emissions test
- Likely to fail
- Parts involved
- Alt Fuel Vaporizer B, Engine Coolant Circuit, Afcm
Related codes
- P2A8BAlternative Fuel Vaporizer A Performance
- P2A8DAlternative Fuel Vaporizer C Performance
- P2A89Alternative Fuel Pump C Compression Stroke Valve Control Circuit Low
- P2A8AAlternative Fuel Pump C Compression Stroke Valve Control Circuit High
- P2A8EAlternative Fuel Pump A Performance
- P2A8FAlternative Fuel Pump B Performance
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.