2001 Ford Expedition OBD ERROR P0171

2001 FORD EXPEDITION
155,182 MILES • V8 • 2WD • AUTOMATIC
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SMILEY713
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  • 1 POST
hi i have a ford expedition 4.6 triton . my problem is its burning the gas to lean error p0171 is what the scanner is reading . i've tried to change o2 sensors , MAF sensor ive gone the extra mile and replaced all spark plugs and ignition coils with accel coils and spark plus , and cant seem to get rid of this code its driving me insane . ive been told that it may be the fuel injectors . any one have the same problem
Mar 4, 2010 at 10:58 PM
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RASMATAZ
  • ASE Certified Mechanic
  • 75,992 POSTS
  • ASE Certified Mechanic
Could be dirty fuel injectors, vacuum leaks, insufficient fuel pressure and a leaking EGR valve
Mar 4, 2010 at 11:04 PM
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