Me too... I have the P0455 & P01448
I was wondering what I should do if I have these codes too. I did check my gas cap and it seems fine, but how can you tell? Also, I have read it could be a control valve problem. Is that the control valve on the engine or on the charcoal canister near the rear bumper?
Thanks so much!!!
I also have a 2002 Maxima SE
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