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P0234: Turbocharger/Supercharger Overboost Condition
Severity: High Stop or minimize driving and get it looked at right away.
What does P0234 mean?
Boost pressure has gone higher than the engine computer allows.
Generic OBD-II definition: Turbocharger/Supercharger Overboost Condition. Confirm applicability in your vehicle service information.
Common causes
- Stuck wastegate
- Faulty boost control solenoid
- Faulty boost pressure sensor
- Damaged vacuum lines to the wastegate
Symptoms
- Reduced power (limp mode)
- Surging
Can I keep driving with P0234?
Severity: High Stop or minimize driving and get it looked at right away.
If the check engine light is flashing or the car runs badly, stop driving and have it checked.
Typical fixes
- Inspect wastegate and its actuator
- Check boost control solenoid and lines
- Verify sensor readings