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International Automotive Technicians Network
Re: Downstream O2 Sensor Effects on Fuel Trim
Posted to Technical Theory Forum on 1/11/2019

While the patents are vague, generalized and in abstract, for me, they fill in the gaps left out by the general description found in the SI.

I've always assumed that the rear O2 was dual purpose as far as it being an input for fuel trim and that it's info wa... Login to read more.