Cause
Faulty clutch actuator
On an automated manual or dual-clutch gearbox, the actuator operating the clutch. There is no mechanical fallback, so a failure leaves a car that sounds perfectly healthy and cannot move.
Its adaptation values track clutch wear, so a fault here is worth reading alongside them — the actuator may be working correctly at the end of its travel.
Typically specialist work. Needs equipment or training most home workshops do not have.
Some of these codes mean you should stop driving
7 of the 48 codes this can cause indicate a fault where continuing to drive risks damage or is unsafe. Which one you have matters more than the cause does — read the code's own page before deciding.
Codes this can cause (48)
Codes where this is a likely explanation first, rather than merely a possible one.
- P0806 Clutch Position Sensor A Circuit Range/Performance Likely for this code High
- P0810 Clutch Position Control Error Likely for this code High
- P0811 Excessive Clutch A Slippage Likely for this code Stop driving High
- P0900 Clutch A Actuator Control Circuit/Open Likely for this code High
- P0901 Clutch A Actuator Control Circuit Range/Performance Likely for this code High
- P0902 Clutch A Actuator Control Circuit Low Likely for this code High
- P0903 Clutch A Actuator Control Circuit High Likely for this code High
- P2785 Clutch Actuator Temperature Too High Likely for this code Moderate
- P2853 Clutch A Pressure Discharge Performance Likely for this code Moderate
- P2854 Clutch B Pressure Discharge Performance Likely for this code Moderate
- P2855 Clutch A Pressure Charge Performance Likely for this code Moderate
- P2856 Clutch B Pressure Charge Performance Likely for this code Moderate
- P2857 Clutch A Pressure Engagement Performance/Too Low Likely for this code Moderate
- P2858 Clutch B Pressure Engagement Performance/Too Low Likely for this code Moderate
- P2859 Clutch A Pressure Disengagement Performance/Too Low Likely for this code Moderate
- P285A Clutch B Pressure Disengagement Performance/Too Low Likely for this code Moderate
- P286B Clutch A Pressure Engagement Too High Likely for this code Moderate
- P286C Clutch A Pressure Disengagement Too High Likely for this code Moderate
- P2871 Clutch A Performance/Stuck Disengaged Likely for this code High
- P2872 Clutch A Stuck Engaged Likely for this code Stop driving High
- P2873 Clutch B Pressure Engagement Too High Likely for this code Moderate
- P2874 Clutch B Pressure Disengagement Too High Likely for this code Moderate
- P2879 Clutch B Performance/Stuck Disengaged Likely for this code High
- P287A Clutch B Stuck Engaged Likely for this code Stop driving High
- P2882 Engine Disconnect Clutch Excessive Slippage Likely for this code Stop driving High
Information, not instruction
CarGeek is a reference, not a service manual. Its pages are written from public sources and from what other people have found, never from a manufacturer's own service information, so they can be wrong or incomplete for your particular vehicle. Some of what they describe carries real risk: high voltage, fuel under pressure, stored energy, hot and moving parts.
Have anything you intend to act on checked by a trained person against the manufacturer's own procedure for your vehicle. Nothing here replaces that procedure.
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What makes one worth reading:
- The car — make, model, year and engine. The same fault behaves differently on each.
- What you measured, not only what you replaced.
- What actually fixed it — or that nothing did, which is worth knowing too.
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