Mechanics

FORD FREESTAR SENSOR PROBLEM

2004 Ford Freestar • 150,000 miles

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
Avatar
Guest
March 12, 2013.




Common cause of code 171 is the EGR valve.

Caradiodoc
Mar 12, 2013.


AD