My check eingine light just came on. I ran the code...P049, & P0492. Just did a full tune up about a week ago, Tech went down to the valley pan gasket, could they have triggered any codes by doing sloppy work or did I miss something when I decided to tune up the X? =\


BTW,...after my tune up I noticed very efficient fuel consumption and now seeing very inefficient fuel consumption. ..any common relations to these codes?

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