Ok, autoenginuity is showing the same code. P2201 and 4B6A. Both are high NOx, and emission related.

It has a freeze frame of the data when the code was set as follows:

calculated load 0%
coolant temp 187F
engine rpm 1487/rpm
vehicle speed 50 mph
air intake temp 90F
airflow rate 5.59 lb per min
absolute throttle position 14%

Looking at the nox sensor data streaming off the ecm now.

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2011 X5 35D fast
2013 X5M faster
2006 M5 fastest