I had mine in the shop recently for a SES.
"Ok got her back, only took one day
4D16, SCR System Efficiency, Metering Valve Clogged.
They removed it, cleaned it and reinstalled it. Rechecked it, appears to be working fine.
They also came up with and EGR fault found in the DDE FC(4873)
EGR Cooling Plausibility. Spring for bypass flap on the EGR cooler is broken. Apparently this is part of a recall? Anyone know about this?"
I also had an EGR fault along with a metering valve. I wonder if any of this has to do with that recall they just issued i read about on here.
Here's my SES thread link,
http://www.e90post.com/forums/showth...=454659&page=2