OBD-II code · Powertrain (generic, extended)
P2BA3 Starter/Generator Mechanical Performance
The hybrid control module detects that the integrated starter/generator does not deliver the expected mechanical torque or speed for the commanded operation. Belt slippage, bearing wear, or coupling fault.
Is it safe to drive with P2BA3?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelyDrive belt slipping or worn
- PossibleStarter/generator bearing worn
Repair at a glance
- Difficulty
- Hard
- DIY friendly
- Best left to a mechanic
- Typical labour
- 2–8 h
- Emissions test
- Usually unaffected
- Parts involved
- Starter Generator, Drive Belt, Hybrid Control Module
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.