2004 LINCOLN LS P0171, P0174

  • Tiny
  • attikis
  • 2004 Lincoln LS

Engine Performance problem
2004 Lincoln LS V8 Two Wheel Drive Automatic 95000 miles

I'm getting these codes. Car was riding great, all of a sudden the check engine light comes on, I get a code reader and I get codes P0171 and P0174. The car is now a little sluggish and sometimes seems to have no power. Help?

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Friday, June 4th, 2010 AT 6:48 AM

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  • Tiny
  • rasmataz
  • Member

P0171/P0174 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.

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Friday, June 4th, 2010 AT 6:54 AM

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