LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Jeep >> 2024 >> Gladiator Nighthawk, Part Time T/Case Control, Automatic Trans >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> 3.6L (GPEC 5) - DTCS P0430 To P0461 >> DTC Troubleshooting >> P0455 EVAP System Large Leak >> Possible Causes
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Possible Causes

Possible Causes
EVAP SYSTEM PLUMBING LEAKING
CHARCOAL CANISTER LEAKING
FUEL TANK OR FUEL PUMP SEAL LEAKING
ESIM SWITCH OR WIRING ISSUE
ESIM MOUNTING SEAL LEAKING
ESIM INTERNAL CHECK VALVES LEAKING
ESIM MOUNTED INCORRECTLY ON THE CANISTER
PURGE SOLENOID LEAKING

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