LEMON Manuals: Even more car manuals for everyone
Home >> Dodge and Ram >> 2023 >> ProMaster 2500 >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> 3.6L - DTCS P0440 To P04FC >> DTC Troubleshooting >> P0457-EVAP System - Loose Fuel Cap >> Possible Causes

Possible Causes

POSSIBLE CAUSES
LOOSE OR MISSING FUEL FILLER CAP
LARGE EVAP SYSTEM LEAK

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