P2A8D
Alternative Fuel Vaporizer C Performance
The AFCM detects that vaporizer C 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.
- Check engine light: Yes
- Emissions related: Yes
- Repair difficulty: hard
Common causes
Ordered by how often each turns out to be the cause.
- Coolant flow through vaporizer reducedCommon
- Heat exchanger surface fouledPossible
Parts involved
- Alt Fuel Vaporizer C
- Engine Coolant Circuit
- Afcm
P2A8D is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.