02 sensors location

Good afternoon,

I attached pictures for you of the sensor location. The fronts are air/fuel ratio sensors and are more expensive than standard sensors.

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

What is the exact issue? What are the codes? I would look at the codes first before assuming the sensors are an issue. They do not fail that often.

https://www.2carpros.com/articles/check-engine-light-top-ten-reasons

Roy