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.
- Check engine light: Yes
- Emissions related: No
- Repair difficulty: hard
Symptoms
- EV/hybrid system warning light on
- Reduced motor power or torque
- Possible limp mode or vehicle shutdown
Common causes
Ordered by how often each turns out to be the cause.
- Open in supply wireCommon
- Supply fuse blownPossible
- Pin pushed back out of connector bodyLess likely
Parts involved
- Drive Motor A Inverter
- Wiring Harness
- Hybrid Control Module
P0C0B is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.