Drive Motor A Position Sensor Circuit
Electrical fault on the resolver or encoder used to determine rotor position of drive motor A. Position is essential for vector control commutation.
Affected components
- Drive motor a
- Rotor position sensor
- Resolver
Common causes
- High likelihood: Resolver failed
- Medium likelihood: Resolver wiring shielding fault
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.