P2E7B
Drive Motor A Excitation Current Sensor Circuit
The drive motor A excitation current sensor circuit reports a generic fault. Field excitation current measurement is unreliable.
- 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.
- Excitation current sensor failedCommon
- Wiring faultPossible
Parts involved
- Drive Motor A Excitation Current Sensor
- Wiring Harness
- Hybrid Control Module
P2E7B 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.