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International Automotive Technicians Network
Re: Exhaust Fluid Quality Poor
Posted to Technical Discussion Forum on 1/13/2020

At a steady cruise the spread between them should be roughly 70%. Also during the RFQ test once it starts dosing should be the same. The best test IMHO for the NOx sensors is from a stop do a WOT run up to 60 then go to closed throttle decel. Both NOx sensors ... Login to read more.