1 or 2 O2 sensors on 320 CDI

[anparkinson]

I have a 320 CDI CLS year 2009. I'm getting two error messages 3050/2 and 2668/2 referring to the G3/2 O2 sensor upstream of the cat.

Looking under the car I can only see one O2 sensor near the cat which will be easy to replace. Is there another one further upstream nearer the turbo?

 

[W1ghty]

I have a 320 CDI CLS year 2009. I'm getting two error messages 3050/2 and 2668/2 referring to the G3/2 O2 sensor upstream of the cat.

Looking under the car I can only see one O2 sensor near the cat which will be easy to replace. Is there another one further upstream nearer the turbo?

There was only one on my 2009 om642 (non dpf) car

 

[Larkone]

only one on mine (2009 model)