Inspection help?

[Jun3bug]

I'm getting an oxygen sensor and oxygen sensor heater readiness code. Which o2 sensor do I need to replace? And also since I have link, do I have to change back to the stock tune? Thanks

 

[92AWDHX40]

Are you tuning off the wideband? The stock tuned your tuning off the wideband is that correct or not. Not off the stock 02 sensor or am i wrong.

 

[Jun3bug]

I tune off my wideband. But I'm trying to pass inspection and those are the readiness codes I get :/ .. Wanted to see if anybody knew which o2 sensor it was. Do I have to set everything stock?

 

[Blue Talon Boy]

It should say B1S1 or B1S2. That will tell you which one. S1 is upstream. S2 is downstream.