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Powertrain / Under The Hood • P0455 a leak in the Evaporative Emission Control (EVAP) system

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History:

About two months ago i got the warning about checking the fuel door.
I cleaned the inlet with some WD 40 then it went away.

Just over 2 weeks ago I got P0455 and P0457.
This time I got out the funnel by the spare tire, spready id down with Wd40, and cleaned and treated the rubber seal on the fuel door. I cleared the codes.

Now about two weeks later P0455 is back. I don't smell any fule and i park in my garage as well.

So what to look at or try next? I don't have to get my state emissions check until July 2026.

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