p0234
Moderate
Fiat · Cars
Engine Overboost Condition
Quick Answer
Error code P0234 on your Fiat Cars means: Engine Overboost Condition. This is usually fixable — see the step-by-step guide below.
Affected Models
Applies to all models
348330334312319356
Likely Causes
  1. Faulty boost control solenoid
  2. Wastegate malfunction or stuck
  3. Damaged turbocharger
  4. Boost pressure sensor failure
  5. Excessive turbo boost pressure
How to Fix It
1
Monitor boost pressure with diagnostic scanner
2
Test boost control solenoid function
3
Check wastegate actuator movement
4
Test boost pressure sensor accuracy
5
Inspect turbocharger for damage
Pro Tip
This fix requires some technical knowledge. If you're unsure about any step, consider contacting support or a qualified technician.
Parts You May Need
Boost control solenoid
Wastegate assembly
Turbocharger
Related Error Codes
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