Code result
P2851
Shift Fork Position Sensor A/B Correlation
High severity
What it means
The position signals of shift fork sensors A and B do not correlate as expected for the active gear pre-selection. Plausibility check fails.
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
Offset between the two sensors after replacement
highOne of the most commonly reported causes for this code — check this first.
Sensor harness incorrectly swapped
mediumA plausible cause — test and verify before replacing parts.
Related help
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