Originally Posted by staro03
Thank you! I will go check this now. This has been a troubling code! It is the only code tha pops up so I believe the sensors are ok. I am hoping a hose fell off broke or just aged apart. Any other ideas would be appreciated. The Gas Cap and Oil Caps have been replaced.
... a bad seal between gas cap and filler hole will set P0455 as well. Pay close attention to that part of your filler pipe where the gas cap seal rests.... in some cases, they get damaged from jamming the gas dispenser into the filler hole, so that even if gas cap is new(or wrong spec), it still won't seal right...