× Auto Repair Pros Member Benefits TechHelp Knowledge Base Forums Resources My iATN Marketplace Chat Pricing About Us Join Industry Sponsors Video Members Only Repair Shops Auto Pro Careers Auto Pro Reviews
Join Now
International Automotive Technicians Network
Re: P0171 theory
Posted to Technical Discussion Forum on 9/15/2010

Hi Darrell,

[...trimmed text...]

I may not have stated that well. I'm pretty sure you understand what I meant though.

Basically if the downstream is pegged high and isn't shorted(you can usually tell this with a coup... Login to read more.