[Sean486]

Last time my car was put on the select monitor, it was reading that the right side of the engine was running rich and it was suggested that it might be time to replace the Oxygen Sensors (although it is not throwing a code).
My question is should I change both Oxygen Sensors or just the right one.

Also, from what I can tell it looks like a pretty simple installation, but before I attempt it, is there anything tricky that I should be aware of. My skills somewhat basic. I will be using the Bosch ones.