Code P1168, fuel range pressure sensor

Hello, I'm Danny.

Here is the information you requested. The code you mentioned is a bank 2 sensor 1 heated oxygen sensor code. Here a few tutorials showing how they work and how to replace:

https://www.2carpros.com/articles/how-an-oxygen-sensor-works

https://www.2carpros.com/articles/how-to-test-an-oxygen-sensor-02-sensor

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

I've attached pictures below relating to the code and the location of the faulty sensor for your Nissan and circled in red. Hope this helps and thanks for using 2CarPros.