Drive Motor A Position Sensor Circuit Overspeed
The drive motor A rotor position sensor reports a circuit overspeed fault. Phase commutation cannot be controlled reliably.
Affected components
- Drive motor a position sensor
- Wiring harness
- Hybrid control module
Common causes
- High likelihood: Rotor position out of expected range
- Medium likelihood: Position signal lost - default to overspeed indication
Possible symptoms
- EV/hybrid system warning light on
- Reduced motor power or torque
- Possible limp mode or vehicle shutdown
Diagnostic notes
- The malfunction indicator lamp may illuminate
- Reduced-power or limp mode may occur
Related codes
Sources
Diagnostic information is provided for reference only. Confirm the code with a compatible scan tool and follow the vehicle manufacturer's service procedures before replacing components.