Code P22AB, where is the O2 sensor bank 1 Sensor 2 located?

This oxygen sensor is located right behind the catalytic converter. I am getting conflicting meanings to the code though, some say sensor 1, other says sensor 2?

P22AB - "NOx Sensor Heater Control Circuit Bank 1 Sensor 1"

So, I would change the one behind the cat first because that is the one that usually goes out. Here is the location. Make sure to clear the codes once the job is done. Check out the images (below). Let us know if you need anything else.

I have always liked Bosch so I would stick to that brand, also, go with the updated listing for the part as long as the electrical plugs match. Let me know how it goes.

Nice work. It sounds like you might have it fixed :)