obm2 code

2000 FORD EXPLORER
150,000 MILES • 6 CYL • 4WD • AUTOMATIC
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GAMBLERNC
  • MEMBER
  • 3 POSTS
am getting code p0171 and po174 says banks lean what does that mean
Jan 9, 2011 at 5:24 PM
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RASMATAZ
  • ✓ASE Certified Mechanic
  • 75,992 POSTS
  • ASE Certified Mechanic
Lean fuel condition could be caused by one of the following below:

1.Vacuum leaks
2.EGR and PCV valve.
3.Low fuel pressure.
4.Dirty fuel injectors.
5.Mass Air Flow Sensor.
6.Oxygen Sensor.
Jan 9, 2011 at 5:37 PM
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WRENCHTECH
  • ✓ASE Certified Mechanic
  • 20,761 POSTS
  • ASE Certified Mechanic
I have found on those Fords that it's very common for the rubber hoses or connectors to suck a hole right through them. Listen for a hissing noise and follow it to it's source.
Jan 9, 2011 at 6:20 PM
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