OBD-II code · Powertrain (generic)
P0A1A Generator Control Module
The generator control module reports a generic fault. Internal self-tests fail or response time outside calibration.
Is it safe to drive with P0A1A?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelyInternal module fault
- PossibleCommunication degraded
Repair at a glance
- Difficulty
- Hard
- DIY friendly
- Best left to a mechanic
- Typical labour
- 3–12 h
- Emissions test
- Usually unaffected
- Parts involved
- Generator Control Module
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.