Codes on Expedition
My check engine light is on and I had the codes read. The code that was listed is the DTC PO455, EVAP Emission Control System Leak (Large). I had them read at Advance Auto Parts. The guy didn't really know what the problem was. Do you have any suggestions as to what I should do now? Any help is appreciated. It is a 1998 Ford Expedition, Although I am looking at the little paper where the codes are listed and it says Vehicle scanned as a 1999 Expedition. Would that make a difference?