It's eitehr the one on the air pipe to the exaust or it's on the air pump itself.
October, 6, 2012 AT 8:19 PM
Checked both could the codes mean something else? Already checked air pump control valve, and vacuum lines.
October, 6, 2012 AT 9:20 PM
If you weren't getting vacuum to operate teh valve then that could be it. We dont 'have any good drawings/placements of that part. All we have is a typical type thing with nothing for your car. BMW and Merecedes like to look you into their dealers so they only give very basic stuff.