What it means
The drive motor C temperature sensor circuit signal is intermittent or erratic. The code does not identify the specific source of the signal irregularity.
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 reports motor temperature to the control system. This code sets when that signal becomes intermittent or erratic, rather than remaining stable and plausible; a loose connection or vibration-sensitive contact can cause the reading to jump and prompt power limits.
Common causes
Most likely first.
- Sensor connector not seated
- Noisy ground reference
- Connector with intermittent contact under vibration
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 Drive Motor C temperature for sudden jumps or dropouts, and note whether related faults occurred at the same time.
- Inspect the sensor connector for an incomplete latch, loose terminals, corrosion, or moisture.
- Inspect the Drive Motor C sensor harness along its accessible route for rubbing, strain, or damage that could change with vibration.
- With the high-voltage system safely disabled, check circuit continuity and connector contact stability using the manufacturer's procedure.
- If the harness and connectors pass, test the sensor and its ground reference for an intermittent fault.
Common fixes
- Reseat and secure the Drive Motor C temperature sensor connector.
- Repair loose, corroded, or damaged connector terminals.
- Repair harness damage or strain near the sensor.
- Replace the sensor if its signal remains erratic after circuit repairs.
Can I keep driving?
Limit high-load driving and stop if power repeatedly drops or a temperature warning appears. An intermittent signal can cause sudden torque limiting and unreliable motor temperature monitoring.
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.