Cause
Gearbox actuator calibration lost
Not a fault at all — a procedure that was never finished. Adaptations are erased by a battery disconnection, a module replacement or a clutch replacement, and until they are relearned the gearbox runs on defaults that feel exactly like wear.
A car back from a clutch job driving badly is very often this rather than a bad part.
Typically a moderate job.
Codes this can cause (15)
Codes where this is a likely explanation first, rather than merely a possible one.
- P0905 Gate Select Position Circuit A Range/Performance Likely for this code High
- P0909 Gate Select Control Error Likely for this code High
- P0915 Gear Shift Position Circuit A Range/Performance Likely for this code High
- P0919 Gear Shift Position Control Error Likely for this code High
- P280A Transmission Range Sensor A Circuit Not Learned Likely for this code Moderate
- P280B Transmission Range Sensor B Circuit Not Learned Likely for this code Moderate
- P287B Shift Fork A Calibration Not Learned Likely for this code Moderate
- P287C Transmission Adaptive Values Not Learned Likely for this code Moderate
- P288D Shift Fork B Calibration Not Learned Likely for this code Moderate
- P0911 Gate Select Actuator Circuit Range/Performance High
- P0921 Gear Shift Forward Actuator Circuit Range/Performance High
- P0925 Gear Shift Reverse Actuator Circuit Range/Performance High
- P2788 Auto Shift Manual Adaptive Learning at Limit Moderate
- P2789 Clutch A Adaptive Learning at Limit Moderate
- P278F Clutch B Adaptive Learning at Limit Moderate
Information, not instruction
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