Code result
P284D
Shift Fork A Unrequested Movement
High severity
What it means
Shift fork A moves without an actuator command. Hydraulic leakage at the actuator or detent spring failure.
Is it safe to drive?
No — stop driving
This code can put the vehicle into limp or reduced-power mode. Avoid extended driving and have the vehicle diagnosed promptly.
Most likely causes
Internal leak in fork actuator
highOne of the most commonly reported causes for this code — check this first.
Detent spring or ball failed
mediumA plausible cause — test and verify before replacing parts.
Related help
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