I have always had older cars and trucks, so this is all new to me. having those error codes really help with diagnosing if something is wrong.

I am gettign ready to order the oxygen sensor and the autp parts store that I use has 2 different sensors listed, upstream and downstream.

http://shop.oreillyauto.com/ProductL...pe=291&PTSet=A

I take it that I need a "downstream sensor" for this particular error code right?