My tests showed no activity from this front passenger sensor, so I followed the advice from all of the previous threads and checked the connection. It was connected good and I actually disconnected it cleaned the contacts with a few Q-tips and reconnected it. After clearing the codes a few times it still comes up with no activity. Is it definately dead now? It had oil leakage that had drained down into the contacts and I wasn't able to get every bit of it out.

Should I buy a new 02 sensor at this point or is there more I can do?

I'm also getting:
P1174
P0174

I appreciate any help.

 

Replace all 4 at the same time. At your mileage, you are due for all of them

 

I agree, then consider doing an induction cleaning to get rid of a lot of old carbon build up.

 

I have replaced all 4 of the 02 sensors within the last year.

Iv'e been wanting to do an induction cleaning anyway. Never have tried it. I gues I'll give her a shot.

Preciate it!

 

The only other thing that will cause a lean or rich code would be a MAF, but then you would need to have the same codes for both banks.
Since you have recently replaced the 02's then I would say hold off till you get some additional codes giving you a better indication of what is causing it.