GETING CODE PO171 AMP 174NO VACUM LEAKSSEVERAL ...

2004 Ford Freestar

Tiny

Anonymous

March, 12, 2013 AT 4:24 AM

Geting code po171 & 174, no vacum leaks, several mass air sensor replaced, new plugs and wired, new fuel filter. What could cause this lean reading, could it just be a bad sensor sending low voltage reading to computer. Thank you for any help with this

FOUND 1618 RELATED QUESTIONS

1 Answer

Tiny

caradiodoc

March, 12, 2013 AT 4:29 AM

Common cause of code 171 is the EGR valve.

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