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Home >> Jeep >> 2023 >> Grand Cherokee Altitude, AWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 46 (2.0L - DTCS P052B To P0629) >> DTC Troubleshooting >> P056E Cold Start Turbocharger / Supercharger Boost Control "A" Performance >> Possible Causes

Possible Causes

WARNING: This page is about a different variant/trim than selected.
Possible Causes
INTAKE AIR FILTER PLUGGED OR HEAVILY POLLUTED
HIGH RESISTANCE IN THE WASTEGATE POSITION SENSOR POSITION SIGNAL CIRCUIT
HIGH RESISTANCE IN THE 5-VOLT SUPPLY CIRCUIT
HIGH RESISTANCE IN THE SENSOR GROUND CIRCUIT
WASTEGATE VALVE OR LINKAGE BINDING
WASTEGATE SOLENOID/TURBOCHARGER ASSEMBLY

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