Code result
P0234
Turbocharger Overboost Condition
High severity
What it means
Boost pressure exceeded the upper limit during commanded full load. The ECU usually drops fuel and ignition or commands the wastegate fully open to protect the engine; persistent overboost can crack pistons or rings.
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 (carbon, broken linkage)
highOne of the most commonly reported causes for this code — check this first.
Boost control solenoid failed
mediumA plausible cause — test and verify before replacing parts.
Vacuum/pressure line cracked
mediumA plausible cause — test and verify before replacing parts.
Related help
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