» » »

Ford Q&A

Ask Your Question

2004 Ford Escape Question: I'm getting two error codes; P0401 and P0171. How can they be corrected?



, 2.0L 4 Cylinder, Wichita, KS, September 24, 2011, 18:58

I'm thinking there is a single problem causing the two codes

1 Answer
Flag This
  • Answer #1

    September 24, 2011, 21:54

    nope, 2 separate issues.
    401 is an egr flow code. need to get a diag on the components for the egr system. the most common failure is the dpfe sensor but you need to have it verified first.
    the 171 is a lean code. it could be a vacuum leak, mass air flow failure. pcv problem or low fuel pressure. it also needs to be diaged properly to verify.


    Flag This