P0C03
Drive Motor B Current Low
The total current draw of drive motor B reports a current low fault. Motor 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.
- Motor load lower than expectedCommon
- Current sensor offset drifted lowPossible
Parts involved
- Drive Motor B
- Drive Motor B Inverter
P0C03 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.