feul trim malfunction
25

Asked by bigierhymer Aug 08, 2007 at 09:11 PM about the 1999 Mercedes-Benz E-Class

Question type: Maintenance & Repair

what is fuel trim

1 Answer
27,685

dvigano answered 16 years ago

Hi bigierhymer, A "Fuel Trim Malfunction" is normally referencing codes P0170 or P0173. This can be related to a variety of issues ranging from vacuum leak to MAF sensor failure to manifold gasket leak. It would be best if you took into your trusted mechanic or dealership to have this addressed. Good luck!

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