My MIL goes on ever couple of weeks and it gives me a reading of 0707, which is the rear o2 sensor. I know that this is because of my cat, and I don't think this a problem.

This time I got 0707 and 0902. 0902 stands for "RR O2 SEN HTR"

Any thoughts on what that means? I don't think its that big of a deal, but just wanted to check.

 

Either those parts are going bad or they are picking up signals that are out of range which could be as something as simple as old spark plugs that need replacing.

 

They are picking up a signal out of range, but its because of the RT Cat. I am not the only person on this board who has experience this. I remember reading an explination for this, but I don't recall what it was.

BTW - Only 8k on the plugs