OBD-II code · Powertrain (generic, extended)
P2A8F Alternative Fuel Pump B Performance
The AFCM detects that alternative fuel pump B does not produce the expected pressure or flow for the commanded duty. Pump aging, internal leakage, or supply restriction.
Is it safe to drive with P2A8F?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelyPump internal wear reduces output
- PossibleFuel filter clogged
Symptoms
- Check engine light on
- Hard start, no start, or stalling under load
- Power loss especially at high load or rpm
- Possible long cranking time
Repair at a glance
- Difficulty
- Hard
- DIY friendly
- Best left to a mechanic
- Typical labour
- 2–8 h
- Emissions test
- Likely to fail
- Parts involved
- Alt Fuel Pump B, Alt Fuel Filter
Related codes
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.