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Home >> Jeep >> 2024 >> Grand Cherokee Altitude X, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 25 (5.7L - DTCS P0420 To P0461) >> DTC Troubleshooting >> P0452-EVAP Pressure Switch "A" Stuck Closed >> Possible Causes

Possible Causes

WARNING: This page is about a different car, the 2024 Jeep Grand Cherokee L. However, it is still accessible from the selected car via links, so may be relevant.
Possible Causes
ESIM SIGNAL CIRCUIT SHORTED TO GROUND
ESIM SIGNAL CIRCUIT SHORTED TO THE ESIM GROUND CIRCUIT
PINCHED/OBSTRUCTED LINE BETWEEN THE INTAKE MANIFOLD AND CHARCOAL CANISTER
PURGE SOLENOID STUCK CLOSED
EVAPORATIVE SYSTEM INTEGRITY MONITOR (ESIM) SWITCH STUCK CLOSED
POWERTRAIN CONTROL MODULE (PCM)

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