since 5/10, have replaced charcoal canister and the parts that goes with it,also,a sensor. the light still comes on every 2 months or so, especially highway driving and will go out after driving a few days to a week. i have spent plenty. any answers?
check engine light (emissions code) on 2004 Hyundai XG350
by radioten in Albany, NY on April 25, 2011
ANSWER by Superbob , April 29, 2011
i don't know which diagnostic codes you have had but I'd guess that it's got a small leak in the emissions system. It could be due to a defective gascap or a leak in a vacuum line. A Hyundai or Mitsubishi specialist could help you. If you want to find a specialist, here's a directory link for you: https://repairpal.com/directory?address=12206&car_brand_names=Hyundai