OBD-II code · Powertrain (generic)
P0C0B Drive Motor A Inverter Power Supply Circuit/Open
The power supply circuit of drive motor A inverter reports a circuit/open condition. Inverter operation may be impaired.
Is it safe to drive with P0C0B?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelyOpen in supply wire
- PossibleSupply fuse blown
- Less likelyPin pushed back out of connector body
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
- 2–8 h
- Emissions test
- Usually unaffected
- Parts involved
- Drive Motor A Inverter, Wiring Harness, Hybrid Control Module
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.