Hello, I'm Jason. I will do my best to answer your question quickly and accurately using the information you have provided.
The bank 1 sensor 1 is the right (passenger) oxygen sensor before the catalytic converter and is accessed from the top once you remove the intake accordion hose. Bank 1 Sensor 2 is accessed from underneath the car. It's also on the right and is screwed into the upper leading part or the main catalyst next to the transmission