P278F
Clutch B Adaptive Learning at Limit
What it means
P278F means Clutch B Adaptive Learning at Limit.
Check these first
- A worn clutch B pack at the end of its adaptive range
- A sticking clutch B actuator unable to relearn
- A software calibration that has reached its adapt limit
- Low transmission fluid affecting clutch B response
What to do next
- Read the clutch B adapt values on a scan tool
- Check transmission fluid level and condition
- Perform an adaptive learning reset
- Drive a relearn cycle and watch the clutch B adapt values
- Replace the worn clutch B pack if adapt returns to the limit
- Clear the code and retest
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Updated
Generic SAE J2012 definition. Last updated 2026-10-10.