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Home >> Jeep >> 2007 >> Compass Limited, AWD, Standard >> Repair and Diagnosis >> Engine Performance >> System >> DTCS P0443 To P0562 >> P0452-EVAP Pressure Switch Stuck Closed >> Possible Causes
July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Possible Causes

Possible Causes 
INTERMITTENT DTC
EVAP PURGE HOSE/TUBE OBSTRUCTION
(K107) ESIM SWITCH SIGNAL CIRCUIT SHORTED TO GROUND
(K52) EVAP PURGE CONTROL CIRCUIT SHORTED TO GROUND
ESM SWITCH
EVAP PURGE SOLENOID
POWERTRAIN CONTROL MODULE (PCM)

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to  PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE  .  

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