Front O2 sensor = pre cat?

[xr2racer]

Got the Front O2 sensor fault DF0092, DF0967 I reset it the other week but it came back. I'm assuming it does need replaced then but I just want to check the "front" sensor is the one at the front of the car before the cat?

Also what are the symptoms, anything I should be noticing? I do a lot of short town driving in heavy traffic so prob won't have noticed any mpg drop.

 

[MarcB]

I have exactly the same problem.

Bank 1 Sensor 1 is Pre CAT - Before the CAT

I have already changed my O2 sensor after cat and its less than a year old.

Im going to do both them again.

Here you can buy 1 for £61.00
http://www.northwestperformance.co....ucts_id=112&osCsid=adp4vtdnscrop40s5f6hm8pjk1

Here you can buy 2 for £100
http://www.northwestperformance.co....ucts_id=353&osCsid=adp4vtdnscrop40s5f6hm8pjk1

 

[xr2racer]

Thanks, I'm just not 100% if it actually needs changed or not. I looked at the rstuner live graph for the first 90 secs after turning it on but I don't know what a nornal reading would be.