O2 sensor gone bad??

First off i have an ODB2 GSR motor in my civic. It's thrown a CEL code P0133 - Primary O2 sensor Circuit Slow Response. Does this mean that i would need to buy a new O2 sensor? Or could it just be dirty and just needs to be pulled out and sprayed with some kind of cleaner? I have no experience with O2 sensors and i couldn't really find any info on it. My car also smells like it was running rich before this happend, could this have caused it?

replace the o2 sensor.

Yeah, I'd place my money on the 02 sensor. Normally they slowly go bad, so it could have caused the car to run rich before it threw a code.

ya i thought i might have to buy a new one. I bought one off e-bay, anyone have problems with doing that? i got this one --> http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=7971180559&sspagename=ADME%3AB%3AEOIBSAA%3AUS%3A11 so i hope it works out. Think i got screwed over on this one?

O2 sensors are expenisve, i had to get one in a previouse car, and it was in that price range if i remeber correctly. hope it fixes your problem.

http://stores.ebay.com/Sparkplugssource_W0QQssPageNameZviQ3asibQ3astorevi ewQQtZkm

2 years on my 99 si and still working.

ya i thought i might have to buy a new one. I bought one off e-bay, anyone have problems with doing that? i got this one --> http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=7971180559&sspagename=ADME%3AB%3AEOIBSAA%3AUS%3A11 so i hope it works out. Think i got screwed over on this one?

It's a good one. NGK Thumbs up

I had a customer in yesterday that had paid $400.00 for an 02 replacement.

So watch out!

SH