P2789
Clutch A Adaptive Learning at Limit
The adaptive learning that compensates for clutch A engagement point drift in a DCT has reached its limit. Clutch wear is at end of life.
- Check engine light: Yes
- Emissions related: No
- Repair difficulty: hard
Symptoms
- Check engine or transmission warning light on
- Harsh, delayed, or missing shifts
- Possible limp mode (locked in one gear)
- Slipping or shuddering during gear changes
Common causes
Ordered by how often each turns out to be the cause.
- Clutch worn beyond compensation rangeCommon
- Actuator position driftPossible
Parts involved
- Dual Clutch A
- TCM
P2789 is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.