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af wide band o2

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3 years 9 months ago #42206 by Columbus450
af wide band o2 was created by Columbus450
2010 ford triton
Quick question... are upstream AF wide band 02 sensors being used immediately on cold start?? thanks

Also Do AF sensors switch like narrow band,?

I know narrow band do not until closed loop
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3 years 9 months ago #42263 by Noah
Replied by Noah on topic af wide band o2
Wide band AFRs do not switch like traditional O2s.
They are part of the feed back loop, so they are not used until the vehicle is in closed loop.
They may become active sooner than an O2, but you'll know for sure if the PCM is using them for fuel calculations by checking the loop status.
Open loop/no
Closed loop/yes
"Ground cannot be checked with a 10mm socket"
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