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Home >> Fiat >> 2017 >> 500 Lounge, Standard Trans >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 36 (1.4L Turbo - DTCS P0271-00 To P0615-00 - 500) >> DTC Troubleshooting >> P0452-00 EVAP Pressure Switch Stuck Closed >> Possible Causes

Possible Causes

WARNING: This page is about a different variant/trim than selected.
Possible Causes
PINCHED/OBSTRUCTED LINE BETWEEN THE PURGE SOLENOID AND FUEL TANK
ESIM SIGNAL CIRCUIT SHORTED TO GROUND
ESIM SIGNAL CIRCUIT SHORTED TO THE ESIM GROUND CIRCUIT
EVAPORATIVE SYSTEM INTEGRITY MONITOR (ESIM) SWITCH
OBD VENT VALVE
POWERTRAIN CONTROL MODULE (PCM)

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