What it means
The ECM detects a range/performance fault on the drive motor a temperature sensor c circuit. Reading cannot be used reliably for control.
At a glance
- Usually lights the check-engine light
- The engine or gearbox may go into limp mode
How it works
Drive Motor A temperature sensor C measures temperature for motor protection and control. This code sets when its reading falls outside the module's expected range or response pattern, even though the circuit may remain electrically connected.
Common causes
Most likely first.
- Sensor characteristic drifted
- Sensor mounting displaced
- Sensor element aged beyond calibration window
Symptoms
- EV/hybrid system warning light on
- Reduced motor power or torque
- Possible limp mode or vehicle shutdown
How to diagnose it
- Review freeze-frame data and live readings for Drive Motor A temperature sensor C, comparing its response with other available motor temperature readings and the operating conditions.
- Inspect sensor C's mounting and surrounding area for displacement, poor contact with the intended measurement point, or signs of damage.
- Check the sensor C connector and wiring for loose terminals, corrosion, heat damage, or routing that could affect the reading.
- Test sensor C's response across the manufacturer's specified conditions to see whether its output tracks temperature correctly.
- If the sensor response is correct, check its installation and circuit integrity against the manufacturer's procedure, then clear the code and recheck.
Common fixes
- Correct sensor C mounting so it measures at its intended location.
- Clean or repair poor connections in the sensor C wiring and connector.
- Replace a sensor C element that has drifted outside its specified response.
- Clear the code and confirm the reading follows temperature changes plausibly.
Can I keep driving?
Limit driving and avoid heavy acceleration, towing, or repeated high-load use because the module may reduce motor torque or shut the vehicle down if it cannot trust sensor C's temperature. Have the fault checked promptly, especially if a hybrid or EV warning or reduced-power mode appears.
A code shows where the control module detected a fault, not always which part failed. Check the causes in order and confirm with a test before replacing parts. Have several codes? Check them together
This is a generic code: it means the same on every make. The car’s maker may add more detail in its own service information.