Messing the pants is so easily achieved these days with everyone's sensitivities on the surface. As concerned as I am about it would mean chopping the car down to a trike and setting in a chair to replace the 02 sensor, which is probably what will eventually happen if the ride has a major "lay down". But it's going strong/good enough. I'll fix it, yeah.
But did you ever just wonder? Well you can't in some circles apparently.
Anyway, the magic crossover number around .450 MV then if 02 sensor not responsive enough reads the tables in the ECM. Like all of the other less critical senors (excluding CPS exploding & such). Typical fare.
I'll keep me wonderin' to myself around here and keep it on book level learnin'. Take it easy on your nerves cobalt327, It's only questions in life. Nobody asked for the vault key.