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Home >> Chrysler >> 2009 >> PT Cruiser Limited >> Repair and Diagnosis >> External Pages >> Different car >> Section 58 (DTCS P0299 To P0441) >> P0299-Turbocharger UNDERBOOST 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 
CLOGGED AIR FILTER
INTAKE AIR LEAK OR RESTRICTION
EXHAUST AIR LEAK OR RESTRICTION
VACUUM HOSES/TUBES
THROTTLE INLET PRESSURE SENSOR, WIRING, OR RELATED CONNECTORS
SURGE SOLENOID, WIRING, VACUUM, OR RELATED COMPONENTS
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  .