2000 Pontiac Grand Prix Check Engine Light Is On:

Tiny
ORLANDOGATLIN
  • MEMBER
  • 2000 PONTIAC GRAND PRIX
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 133,068 MILES
When put on the computer code: P0171 is what it is reading. Engine lean?
Friday, September 17th, 2010 AT 5:34 PM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
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.
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Saturday, September 18th, 2010 AT 12:09 AM

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