Code P0141, where is bank 1 sensor 2 O2 located?

Hello,

Bank 1 on your vehicle is the rear bank facing the firewall.
O2 sensor 2 is the downstream sensor from the catalytic converter.
To replace the sensor, you should use an O2 sensor socket which has a special cut out for the wiring. See picture below.

How to replace an O2 sensor 2 bank 1 on Acura:
https://youtu.be/DHtLru4Flbk

Also, how to replace the O2 sensor:
https://www.2carpros.com/articles/how-to-replace-an-oxygen-sensor

Location of the O2 sensor 2 is in the 1st picture below

Please let us know how you get along.

Cheers, Boris