Clutch A Actuator Control Circuit Low
What it means
P0902 means the control circuit for clutch "A" actuator reads an abnormally low voltage — this is on an automated-manual or dual-clutch gearbox where a motor or solenoid, not a pedal, works the clutch. The engine still starts, but if the actuator can't be driven properly the clutch may not engage or release cleanly, making the car shift roughly or struggle to move. It's usually a wiring or actuator fault worth diagnosing before drivability worsens.
Can I keep driving? The engine starts, but on an automated-manual or dual-clutch transmission the clutch may not engage or disengage properly — shifting can be rough and the car may struggle to move; get it checked promptly.
Common symptoms
What you'll notice
- Check-engine light on
- Difficulty shifting gears
- Clutch slips or fails to engage/disengage cleanly
- Jerky launches or the car struggles to move
Common causes
Most likely first
- Open or short to ground in the clutch actuator control wiring (reads low)Likely
- Corroded or loose connector at the clutch actuatorCommon
- Failed clutch actuatorCommon
- Failed control module (TCM/ECM)Less often
How to diagnose & fix
Work through it in order
- Read freeze-frame data and inspect the clutch actuator connector and wiring for damage, corrosion, or shorts to ground.
- Measure the actuator's resistance and control voltage against service data.
- Replace the clutch actuator if it fails its electrical checks.
- If wiring and actuator are good, suspect the control module. Clear and re-test.
FAQ
Quick answers
Is it safe to drive with P0902?+
Can I just clear P0902?+
Related codes
Often seen with P0902
Read & clear P0902 yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.