Drive Motor A Phase U Current Sensor Circuit
The motor controller detects an electrical fault on the phase U current sensor of drive motor A. Phase current sensing is required for vector control of the synchronous machine.
Affected components
- Drive motor a
- Phase current sensor
- Inverter
Common causes
- High likelihood: Current sensor failed
- Medium likelihood: Inverter internal 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.