P0EF0
Drive Motor A Control Module Overtemperature
The drive motor A control module reports overtemperature. Cooling insufficient or load excessive. The drive motor's position, current and temperature are watched continuously; a fault here downgrades the inverter to a safe operating point or triggers torque reduction.
- Check engine light: Yes
- Emissions related: No
- Repair difficulty: medium
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.
- Cooling insufficientCommon
- Load excessivePossible
Parts involved
- Drive Motor A Cm
- Cooling System
P0EF0 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.