Well I just had the codes pulled at a local parts store and got a P0133 and P1131 codes. I did a search and found this to be a passenger side O2 or lean condition. This is of course after the local dealership told me that Bank 1 Sensor 1 is the driver's side manifold one. I've already changed that one (first time the code came up was late March). I should have known it wasn't right when it thru the same code about 3 weeks later and just threw the two codes listed above today.

My engine is idling rough when its in gear and also stubbles every so often until I pick up the throttle more (maybe crack it open another 20-25%). Is this more than just an O2 issue? Do I need to change it first then start looking for vacuum leaks? Thanks in advance.