I need to replace the drivers front o2 sensor on my 2001.5 Audi S4. Can anyone tell me where its at? Is it hard to get to? Even beter if someone can email me a picture from a online service manual showing detail. Thank you
freemoe@aol.com

 

If you take the air box out you will be able to see down the side of the engine and locate the lambda on the exhaust pipe you will proberly need a lambda socet and a flexy head ratchet. good luck

 

I need the drivers side... The airbox is on the pass side.