P0A3C
Drive Motor A Inverter Performance
The inverter for drive motor A does not produce expected output torque or commutation timing within tolerance, indicating IGBT or gate driver issue.
- Check engine light: Yes
- Emissions related: No
- Repair difficulty: shop_only
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.
- IGBT degradationCommon
- Gate driver faultPossible
Parts involved
- Inverter
- Drive Motor A
- Igbt Module
P0A3C 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.