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Re: 2012 Ford Focus 2.0 DOHC non Flex Fuel P0171
Posted to Technical Discussion Forum on 8/27/2015

IDK how to view those attachments, but I have a few thoughts in general. Did you get Freeze Frame with the lean code? Does is keep running lean at higher RPM or just at idle. Did you reset KAM after replacing the A/F sensor? Have you pinched-off the booster ho... Login to read more.