Code result
P287B
Shift Fork A Calibration Not Learned
Moderate severity
What it means
The TCM has not learned the end-stop calibration for shift fork A. Engagement positions cannot be commanded with full precision until adaptation completes.
Is it safe to drive?
Use caution
The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical.
Most likely causes
Adaptation lost after battery disconnect or TCM reset
highOne of the most commonly reported causes for this code — check this first.
Shift fork replaced without learn procedure
mediumA plausible cause — test and verify before replacing parts.
Related help
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