Codes of PO171 and PO174 which says System.

Tiny
CHRISTINEPOTTER
  • MEMBER
  • 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?
Sunday, February 24th, 2013 AT 11:36 PM

3 Replies

Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 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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Thursday, September 26th, 2019 AT 10:13 AM
Tiny
CHRISTINEPOTTER
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Thank you so much. I will try that.
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Thursday, September 26th, 2019 AT 10:13 AM
Tiny
SATURNTECH9
  • MECHANIC
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Your welcome.
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Thursday, September 26th, 2019 AT 10:13 AM

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