Hondata

Hey,
Ive been having a problem tuning my vehicle with an S300. I was getting no reading on the laptop with 02.
So I swapped the wideband out with a new AEM one, replaced the sensor in the exhaust, ran new wiring, and still the same no reading problem.
When I run the car, the gauge on the dash says 12.8-13.0 AFR, but the laptop reads 16.5 AFR with 3.3v.
So I take the voltage reading from the wideband 0-5v wire that goes into the ECU.
It reads the same 1.9-2.0v reading that is consistent with the 12.8-13.0 AFR on the gauge.
So I inspect the wire all the way to the ECU and it looks great.
So I keep the car running and watch the sensor on the laptop while I cut that 0-5v wire and no change of AFR, voltage, idling, or any error codes.
This is all very weird and I wouldn't think that the Hondata or the ECU all of a sudden just stopped reading one sensor.
Ideas?

What input are you using for the wideband?

I am using one of the stock pins? It was all working for 80,000 miles and then just decided to die.

Specifically what input are you using?

Sorry, I know the mechanics of the car well, but I would need to look up what you mean.
I am using a new AEM O2 wideband with the 0-5v wire connected into the ECU.

Any help would be appreciated.

What input on the ECU do you have it connected to?

This is useful information