ENGINE LIGHT ON

  • Tiny
  • Ed
  • 2001 Chevrolet Impala
  • 6 CYL
  • FWD
  • automatic
  • 120,000 miles

Chev 2001 impala engine light code P0171 system lean what is the problem and how to repair ir

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Tuesday, November 16th, 2010 AT 9:52 PM

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  • Tiny
  • rasmataz
  • Member

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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Tuesday, November 16th, 2010 AT 10:40 PM

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