Thank you all for your responses. I'm sorry I haven't been back to respond but things are just now getting back to normal around here from all the traveling we've been doing. And for some reason I didn't get an e-mail notifying me of responses, I'll have to check my preferences on that.
Since I wrote this post the Check Engine light hasn't come back on, but I'm sure its still listed on the cpu as a permanent code. Would it have come back on if it were still a problem?
Rit- That's what I was thinking, I don't think it can hurt to try the Seafoam trick but I have to find a place I can go to do it without someone calling the cops. Not many places around here in SW Chicagoland to do this.
Ralphalph- I'm not sure what you mean by 'nox'? I have not had the piston and rings replaced for oil consumption.
dwendt- What do you mean by the 'other' oxygen sensor? So it is NOT supposed to be reading zero with the engine off?
Colt Hero- O2 sensors are welded onto the exhaust system, right? I'm not sure what Mod $00 means, this was the reader that Advance Auto had. There was no recent service done to the vehicle prior to the Check Engine light coming on. It happened to come on right when it was due for an oil change though (which I have done at the dealer).
rednox301- The engine was not running when I had the scan tool plugged in. Should I plug it in while it's running? I also noticed that all of the screenshots were referring to the sensor B1S1 which I think means the pre-cat sensor on cylinder 1? The confusing thing is that all of the screenshots say 'status = OK' as if everything is fine. But then again, that might be because the engine was off?