Depends on engine size.
Bank 1 is usually the front set of the V6 or V8
Sensor 2 is usually the down stream sensor
Guess I should look it up on the internet to make sure???
And, the DTC .. code says that the heater circuit has an issue.
Could be the O2 sensor's heater circuit is busted
Or the wiring to the O2 sensor is busted
Measuring the resistance of the heater circuit (2 black wires) should be around 4 ohms
But, that depends on the O2 sensor
Really should double check those ideas.
Maybe youtube has a video???