What it means
The drive motor C temperature sensor circuit signal is above the expected threshold. The code does not by itself identify the cause.
At a glance
- Usually lights the check-engine light
- The engine or gearbox may go into limp mode
How it works
The Drive Motor C temperature sensor circuit supplies the motor controls with a temperature signal. This code sets when that signal is higher than the expected threshold, which can happen with an open sensor circuit or a short to battery voltage; it does not identify the failed part by itself.
Common causes
Most likely first.
- Signal wire shorted to B+
- Open sensor
- Connector pins corroded - high contact resistance
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 and live data for Drive Motor C temperature and check whether the reading is implausibly high or fixed at a limit.
- With the high-voltage system safely disabled, inspect the sensor connector and harness for disconnected terminals, broken wires, or insulation damage.
- Use the manufacturer's wiring diagram to test for an open circuit and for a signal wire short to battery voltage.
- Test the Drive Motor C temperature sensor and connector terminals against the manufacturer's specifications.
- If the sensor and harness pass, check the control-module input for a fault.
Common fixes
- Reconnect a loose sensor connector or repair an open wire.
- Repair a signal wire shorted to battery voltage.
- Replace corroded or damaged connector terminals.
- Replace the Drive Motor C temperature sensor if it fails testing.
Can I keep driving?
Avoid hard acceleration and stop if a temperature warning or significant power reduction appears. A falsely high reading can trigger protective limits, while the fault may also prevent reliable monitoring of the motor's real temperature.
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.