PO 171 CODE

2001 PONTIAC GRAND PRIX
110,000 MILES • 6 CYL • FWD • AUTOMATIC
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JAVIER01
  • MEMBER
  • 1 POST
code po 171 ,lean bank 1 . what could be promblem
Mar 17, 2011 at 6:03 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.
Mar 17, 2011 at 7:00 PM
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