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Home >> Jeep >> 2023 >> Grand Cherokee Altitude, AWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 42 (2.0L - DTCS P0221 To P02F0) >> DTC Troubleshooting >> P0299 Turbocharger UNDERBOOST >> Possible Causes

Possible Causes

WARNING: This page is about a different variant/trim than selected.
Possible Causes
RESTRICTED AIR FILTER
BOOST SYSTEM PRESSURE HOSES RESTRICTED OR LEAKING
INTAKE SYSTEM LEAK OR RESTRICTION
EXHAUST SYSTEM RESTRICTION
WASTEGATE VALVE STICKING
WASTEGATE SOLENOID CONTROL (+) CIRCUIT OPEN/HIGH RESISTANCE
WASTEGATE SOLENOID CONTROL (-) CIRCUIT OPEN/HIGH RESISTANCE
SURGE VALVE LEAKING OR STUCK OPEN
FAULTY WASTEGATE SOLENOID OR TURBOCHARGER (DRAGGING TURBINE)

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding. Refer to  PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE  .