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Home >> Jeep >> 2018 >> Compass Trailhawk >> Repair and Diagnosis >> Engine Performance >> System >> 2.4L - DTCS P0223 To P0685 >> DTC Troubleshooting >> P0456-EVAP System Small Leak >> Possible Causes
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Possible Causes

Possible Causes
EVAP SYSTEM PLUMBING LEAK
CHARCOAL CANISTER LEAKING
FUEL TANK OR FUEL PUMP SEAL LEAKING
ESIM MOUNTING SEAL LEAKING
ESIM INTERNAL CHECK VALVES LEAKING
PURGE SOLENOID LEAKING
RESTRICTION IN THE PURGE TUBE BETWEEN THE PURGE SOLENOID AND CHARCOAL CANISTER

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