Code result
P02CA
Turbocharger/Supercharger B Overboost Condition
High severity
What it means
Boost pressure on the secondary turbocharger/supercharger (B) on a sequential or twin-charged setup is above the upper threshold. Wastegate stuck closed, VGT vanes stuck, or boost pressure sensor reads high.
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
Wastegate stuck closed
highOne of the most commonly reported causes for this code — check this first.
VGT vanes stuck closed
mediumA plausible cause — test and verify before replacing parts.
Related help
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