what dose EVAP system leak monitor, small 0.20 leak detected
it has to do with your emissions control, you have an evap canister under the truck, you ll have to inspect it, its just in front of the fuel tank
Check your gas cap, take a dap of wheel bearing grease and put it around the Oring seal, if your problem doesnt go away you prolly have a small pin hole leak some where in the fill tube or breather tube
Yep gas cap was my answer too, replace that sucker. And heard locking ones cause this issue sometimes too ok. And update this if you fixed it please,thanks.
I have a dash code of 1684 po442
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