OXY sensor replaced twice within 1 month. OEM part Bank 2,sensor 1

Not sure of the brand. I will have to ask my mechanic about the circuit. But the second time around, besides installing another new sensor, he said he checked everything he could think of. He had also ran a new check on the code. Thanks for your help

Some of the aftermarket sensors are junk at best. I have good luck with Denso, NGK /NTK. This is just MY opinion i may be wrong! I am sure your mechanic knows all of this stuff already. Car running ok even with light on?

My car is running fine. I don't notice any difference in the milage. Is OEM aftermarket? I think he purchased it at Autozone. He told me to always get OEM parts. Now that you mentioned it, the box was Denso.