Drive Motor Inverter Temperature Sensor A Circuit High
The ECM detects a circuit high fault on the drive motor inverter temperature sensor a circuit. Reading cannot be used reliably for control.
Affected components
- Drive motor inverter temp sensor a
- Wiring harness
- Hybrid control module
Common causes
- High likelihood: Signal wire shorted to B+
- Medium likelihood: Open sensor
- Low likelihood: Connector pins corroded - high contact resistance
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.