COULD YOU TELL ME HOW TO ELMINATE CODES PO171 AND PO300

  • Tiny
  • peewee35
  • 1997 Pontiac Bonneville
  • 15,700 miles

My check engine light is on and im tryin to figure out what these codes are and get them takin car of could you help please

Wednesday, October 12th, 2011 AT 5:04 PM

1 Answer

  • Tiny
  • Docfixit
  • Expert
  • 18,991 posts

171 fuel trim system lean so maybe vacuum leak and about 20 other things. Need a scan tool to diagnose.
300 the most difficult random missfire again a scan tool needed.

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Wednesday, October 12th, 2011 AT 6:19 PM

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