Code result
P2DA2
Gear Shift Control Module B Supply Voltage High
High severity
What it means
Supply voltage on the gear shift control module B is above the expected window.
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
Alternator overvoltage
highOne of the most commonly reported causes for this code — check this first.
Wire shorted to B+
mediumA plausible cause — test and verify before replacing parts.
Related help
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