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International Automotive Technicians Network
Re: Poisoned A/F ratio sensor
Posted to Technical Tips Forum on 3/23/2019

Back in the very early days of O2 sensors, this looked normal to many. Now if you drive in the rain or run through deep water, an O2 may set a code, much less oil soaking. If the O2 cannot get ambient air, it not working. Login to read more.