OBD-II code · Powertrain (generic)
P0A1B Drive Motor A Control Module Performance
The drive motor a control module reports a generic fault. Internal self-tests fail or response time outside calibration.
Is it safe to drive with P0A1B?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelyInternal module fault
- PossibleCommunication degraded
- Less likelyModule software outdated, reflash may resolve
Symptoms
- EV/hybrid system warning light on
- Reduced motor power or torque
- Possible limp mode or vehicle shutdown
Repair at a glance
- Difficulty
- Hard
- DIY friendly
- Best left to a mechanic
- Typical labour
- 3–12 h
- Emissions test
- Usually unaffected
- Parts involved
- Drive Motor A Control Module
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.