It would be crazy if indeed you dont really need all the electronics and BMW/Bosch just added all that stuff to make an extra $200 per sensor.

O2 sensors are ‘self calibrating’- the metallurgy and construction is such- along with their validated manufacturing- that every one is calibrated and will work with a direct input to the DME.

I dont know why the NOX has the active componentry- my suspicion is that every one is a bit different and needs to be individually calibrated.

Otherwise if any old sensor works and that electronics isnt unique to an individual sensor, Bosch and BMW would simply have moved that ‘smarts’ into the DME. I think.


Also, I do wonder what was going on with BMW extending the NOX sensors warranty and replacing a *TON* of them under warranty. And at the drop of a hat when PUMA troubleshooting….


Interesting.