p0455 code can't find a leak

This is a large leak code for the emissions system . I checked the gas cap and the evap canister and hoses n cracks or anything obvious, I cant find a leak. I have got battery dis connected right now. trying to reset the code. Is there any thing else you can think of that would trigger this? Could the cap be bad and you smell gas? The only odd thing is that I have a coolant leak too both started at the same time within a day of each other is this possibly related? any thoughts?

reset the code

by dis connecting the battery stilton sure what set if probably loose gas cap but we shall see, now the coolant and then the clunk noise.

gas cap

I had same problem. Reset codes and would be ok for a while. Then it would come back in a day or as long as a week later. Sometimes large leak, sometimes small leak. I had a relatively new aftermarket cap… so I didn't think that was the problem. Finally ordered a OEM new cap. All better... Not a code since. They're so cheap its an easy first place to start. Good luck!

and now

at the jeep runs a lot better all of a sudden too