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Home >> Chrysler >> 2009 >> PT Cruiser Limited >> Repair and Diagnosis >> External Pages >> Different car >> Section 57 (DTCS P0171 To P0298) >> P0234-Turbocharger OVERBOOST Condition >> Possible Causes

Possible Causes

WARNING: This page is about a different car, the 2009 Dodge Caliber. However, it is still accessible from the selected car via links, so may be relevant.
Possible Causes 
INTAKE AIR RESTRICTION
INTAKE AIR LEAK
VACUUM HOSES/TUBES
THROTTLE INLET PRESSURE SENSOR, WIRING, OR RELATED CONNECTORS
WASTEGATE SOLENOID, WIRING, VACUUM, OR RELATED COMPONENTS
TURBOCHARGER

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See  DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure  .