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P0234

Overview

Code

P0234

Code Type

P

Code Class

P0

System

Engine

Severity Level

High

Emissions Related

true

Drivability Impact

Major

Diagnostic Protocol

OBD2

Freeze Frame Useful

true

Code Definition

Diagnostic trouble code P0234 indicates a turbocharger boost pressure too high condition

Symptoms

Check Engine Light illuminated; Reduced power; Engine knocking

Overview applies to this diagnostic code.

Affected Systems

On This Page

  • Code Definition

  • Symptoms

  • Affected Systems

  • Possible Causes

  • Diagnostic Steps

  • Drive Safety Notes​

More Resources

Turbocharger control system and engine performance

Possible Causes

Faulty boost pressure sensor; Wastegate stuck closed; Boost leak

Diagnostic Steps

1 Monitor boost pressure data; 2 Inspect wastegate operation; 3 Check for boost leaks; 4 Test boost pressure sensor

Drive Safety Notes

Engine knocking may cause severe damage Stop driving if knocking occurs

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