CODES OF PO171 AND PO174 WHICH SAYS SYSTEM ...

1999 Ford Ranger

Tiny

christinepotter

February, 24, 2013 AT 11:36 PM

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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3 Answers

Tiny

saturntech9

February, 24, 2013 AT 11:59 PM

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.

Tiny

christinepotter

February, 25, 2013 AT 8:53 PM

Thank you so much. I will try that.

Tiny

saturntech9

February, 26, 2013 AT 3:45 AM

Your welcome.

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