Which location is correct for P 1155 trouble code. I have seen both sides shown

Question

It has been listed as bank 2 sensor 1 and bank 1 sensor 2. Obviously I need to know which one it is.
And if you want to answer I replaced bank 2 sensor 1 (engine was stalling and quit and worked as soon as that one was replaced. Next day the trouble light came on again. I erased it three times now.

Answer 1

P0155 Heater circuit malfunction  Bank 2 Sensor 1

This code if you are getting a P0155 can just be the result of the engine stalling  As for the location Bank 2 is where cylinder 2 is located being at front of the vehicle, Sensor 1 is the first  airflow sensor before the catalytic convertor