I found that fuel cap was loose after CEL turned ON. This was immediately next day after a pit stop to refuel. I tightened the cap and then went about with my business and drove for 60 miles with 3-5 engine on/off cycles, but the CEL has persisted. This morning Autozone provided the code as P0455 and said mostly I need to replace the cap. On my way back, I refueled (just 3-4 gallons) and made sure the cap is tight, however the light remains ON. How long does it take to auto reset? Is there some fixed drives that need to complete? I do not have a diagnostic tool to reset. BTW, I also ordered a new OEM cap. I hope it does not need replacement of other complicated stuff like canister, valves etc.
Thanks
Thanks