98 ml 320

EPA test shows P0170 Fuel Trim (Bank 1) and P0173 Fuel TRiim Malfunction(Bank 2)

What are these mean and how to fix its.

Reply to
win
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Might simply be that your gas cap was lose. Tighten it and drive about 100 miles or so to see if the warning light will go off.

Reply to
Josh

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