Trying to interpret the symptoms you have and the fault codes you show. Judging by the number of different messages, it looks like the problem initiates from a bus error. Something is inhibiting bus comms between DSC, instrument panel, transmission, etc. I think those are on the K-CAN but I could be wrong. I am surmising that if major systems can't communicate, the DDE is programmed to shut down the motor to avoid bigger problems.

There could be a plethora of reasons for this and CAS module could be one of them. The bit that is troubling me, why is the AHM reporting 10.5 Volts? At such a low voltage I believe comms errors will start to appear.

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2003 4.4i black ext./black int./black headliner (kid's runabout)
2014 535d X-drive, M package, silver/black interior

Sold but not forgotten:
2009 E70 35d, black ext./black int./black headliner (sold 2021)
2006 4.8iS Le Mans blue/cream int./black headliner, SOLD in 2012 sadly...

Other hardware:
2015 Cayenne S (wife's new DD and definitely wroooommmmm)
2016 Tundra 1794 edition crew cab, luxo hauler
2005 Tundra crew cab, weekend hauler. Sold after 150k very happy miles.