Tech on Replacing O2 sensors?

[gitnmybelly]

Hey Guys... New to this forum. I was wondering if there was a Tech showing how to replace the O2 sensors in my 2009 128i (E82 N52).

Or are there any options in reducing the number of sensors? Different exhaust?

Thanks IN Advance

Alex

[tuphdc]

There is a DIY guide in this thread

http://www.e90post.com/forums/showthread.php?t=357827

I am about to replace an O2 sensor myself. Precat.

[gitnmybelly]

let me know how it goes. Are you just replacing the one?

[tuphdc]

Originally Posted by gitnmybelly

let me know how it goes. Are you just replacing the one?

I just did this over the weekend. I had a CEL and the code was P0050 I believe....which was referring to the harder to reach precat O2 sensor. I replaced it with a bosch o2 sensor I got off of ebay, and after 2 drives the CEL went away

I did rent an O2 socket tool from Advance Auto Parts, because I could not get the sensor out with just my wrench and weak computer hands.