OBD-II code · Powertrain (generic, extended)
P2A33 AFCM Power Relay Control Circuit Low
Voltage on the AFCM power relay control line is below the expected window. Wire shorted to ground or coil short.
Is it safe to drive with P2A33?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelyControl wire shorted to ground
- PossibleInternal short in relay coil
- Less likelyConnector pins corroded - high contact resistance
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 0.5–3 h
- Emissions test
- Likely to fail
- Parts involved
- Afcm Power Relay, Afcm, Wiring Harness
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.