How to repair codes P1166 and P1167?

These are o2 sensor codes. So, we need to run through the testing attached in order to determine what the issue is.

However, here are a couple of guides that will help with this:

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

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

Please follow the testing below and let us know what questions you have, and we can go from there.

Thanks