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Home >> Jeep >> 2023 >> Grand Cherokee Altitude, AWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 45 (2.0L - DTCS P04C2 To P0523) >> DTC Troubleshooting >> P04EF EVAP System Very Small Leak Detected - Fresh Air Side >> Possible Causes

Possible Causes

WARNING: This page is about a different variant/trim than selected.
Possible Causes
SMALL LEAK FROM THE HOSES/LINES ON THE FRESH AIR SIDE OF THE EVAPORATIVE SYSTEM
LARGE LEAK AT CHARCOAL CANISTER OR HYDROCARBON TRAP
SMALL LEAK THROUGH THE PURGE SOLENOID
SMALL LEAK THROUGH THE OBD VENT VALVE
SMALL LEAK THROUGH THE ELCM
SMALL LEAK THROUGH THE FTIV

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