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P0171 FORD -

P0171& P0174 codes, will cleaning MAF take care of this problem? I have a 2003 F-250 XL with a 5.4 V8

Vehicle: 2003 F250 5.4 V8
asked Apr 5, 2012 by anonymous

1 Answer

There is a large selection of items that can cause these codes on a ford. The maf is one of them, also check for vacuum leaks after the maf sensor, low fuel pump pressure, and last but not least, and issue with the map/baro sensor. These codes mean you have a lean mixture on both banks.
answered Apr 6, 2012 by Carguy1 (3,501 points)

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