ok, got it replaced like a month ago, got this code like within the week so cleared it... another two weeks go by and get it again. HoW and WhY??? Is their something else I need to do?
P0455 - Gas Cap!?
- Thread starter scottagnew101
- Start date
I'm not near the rave right now but I do belive that code is indicitive of a failed purge valve. If so there is a hundaye? Part # that is cheaper and a direct fit.
It could be the purge valve, but that usually sets a P0442 which is an EVAPs small leak. I would be leaning towards a leaking DMTL pump. Also, this may seem stupid, but check to make sure your gas cap is fully sealed against the filler neck.
im in the same boat, same evap code. i did gas cap twice, purge valve once.. my next is the fuel filler neck i guess.
oh yeah? maybe ill give it another go with another purge valve. anyone else know that hyundai part# that is suppose to fit?
hilltoppersx said:
yep. and usually it will pass the dmtl pump test making it a pita to diagnose. I think now it is avail separate of the filler neck.
wow well mine just needed to be tightened the HELL down, when you think you've got it...TIGHTEN MORE
scottagnew101 said:
You need a new gas cap then. The threads get tight over time. You can also lube the threads with some silicone spray lubricant.
hilltoppersx said:
thats very interesting, because mines got holes! So if it CAN cause this... looks like I need to get it replaced!
Oh my old gas cap didn't have it written on it "tighten past three clicks".... This one does! So I do it!