CODES OF PO171 AND PO174 WHICH SAYS SYSTEM ...

  • Tiny
  • christinepotter
  • 1999 Ford Ranger
  • 10,000 miles

Codes of PO171 and PO174 which says System adaptive fuel to lean on Bank1 and Bank2. What does this mean and how do I fix it?

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Sunday, February 24th, 2013 AT 11:36 PM

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  • Tiny
  • saturntech9
  • Expert
  • 29,419 posts

It means the engine is running lean or thinks its running lean.I would first check the actual fuel pressure?Then look for vacuum leaks.

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Sunday, February 24th, 2013 AT 11:59 PM
  • Tiny
  • christinepotter
  • Member

Thank you so much. I will try that.

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Monday, February 25th, 2013 AT 8:53 PM
  • Tiny
  • saturntech9
  • Expert
  • 29,419 posts

Your welcome.

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Tuesday, February 26th, 2013 AT 3:45 AM

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