Has anyone else gotten a p0030, p2414 and p2626 before, they are all o2 sensor related, but I just want to be sure the o2 sensor is indeed dead before I go get a new one.

I recently replace the cat which may have a leak and is causing this so I wanted to confirm.

 

interested to hear on this as well. Just got a p0030 and ordered a new sensor. I'm running a stock downpipe though...

 

Yep just went to a dealer and picked one up issue gone