Diagnostic Test

FUEL FILLER CAP/CAPLESS FUEL FILLER VISUAL INSPECTION 

1. Visually inspect for the following:
   • Loose, missing, or damaged Fuel Filler Cap or seal
   • Damaged locking tabs on the Fuel Filler Cap and/or filler tube
   • Damaged seal points on the Fuel Filler Cap and/or filler tube
2. If the vehicle is equipped with the Capless Fuel Filler Assembly, visually inspect the flap and seal for proper sealing.

   Were any problems found?

   Yes 

   • Repair as necessary.
   • Perform the PCM VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .

   No 

   • Perform the P0455-EVAP SYSTEM LARGE LEAK diagnostic procedure.