O2 sensor

The upstream/o2 sensor 1 is screwed into the exhaust manifold.The down stream/o2 sensor 2 is screwed into the exhaust pipe right before the cat.

Here is a guide and diagrams below to show you how to change both sensor positions.

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

Check out the diagrams (Below). Please let us know if you need anything else to get the problem fixed.

Cheers

Your vehicle has 2 oxygen sensors, one in rear of engine compartment, in exhaust manifold and the other in rear of engine compartment in the exhaust piping near catalytic converter

Pretty simple repair make sure you get a o2 sensor socket it will make the job easier and help protect the new sensor when you put it in.