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Re: S1 O2 goes high(1.275volts) during steady cruise over 40 mph
Posted to Technical Discussion Forum on 4/5/2017 1 Reply

I may have misunderstood your original post. Are you saying you have 1.25 volts on a disconnected sensor? Or only when connected and driving it over 40 MPH?

If you have biased voltage coming from the PCM, there could be another issue?? Most are 450 MV, which... Login to read more.

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