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Home >> Jeep >> 2023 >> Wagoneer Carbide, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 17 (5.7L - DTCS P0344 To P0463) >> DTC Troubleshooting >> P0452-EVAP Pressure Switch "A" Stuck Closed >> Possible Causes

Possible Causes

WARNING: This page is about a different variant/trim than selected.
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  .