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Home >> Chrysler >> 2011 >> 300 C, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 330 (4.7L - DTCS P0223 To P0593 - 1500) >> Diagnosis And Testing >> P0452-EVAP Pressure Switch Stuck Closed >> Possible Causes

Possible Causes

WARNING: This page is about a different car, the 2013 RAM 1500. However, it is still accessible from the selected car via links, so may be relevant.
Possible Causes 
EVAP PURGE HOSE/TUBE OBSTRUCTION
ESIM SIGNAL CIRCUIT SHORTED TO GROUND
EVAP PURGE CONTROL CIRCUIT SHORTED TO GROUND
EVAPORATIVE SYSTEM INTEGRITY MONITOR (ESIM) SWITCH
EVAP PURGE SOLENOID
POWERTRAIN CONTROL MODULE (PCM)

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to  STANDARD PROCEDURE  .