Engine Swap and Electrical issues...

[rmielbrecht]

I had a cracked block in my wifes 2001 S80 T6 and swapped is out for one from a salvage yard.
The swap went easier than expected until we got done.

The engine runs fine, the trans still works fine thankfully.

The dash lit up like a Christmas tree though. Many warnings and codes.
Turning the key to position 1 Shows the SRS-AIRBAG Service Urgent warning, the trip odometer shows 32.5 then goes to dashes like it had just been reset.
Going to the second position gives Brake Failure Stop Safely ASAP warning, Check Engine, ABS, Traction Control warnings.
The car starts and runs ok.
The Speedometer, Tach, Fuel gauge and Temp gauge all work fine. The Odometer and Trip Odometers don't increment and the Trip ones stay as dashes.
The Sun roof won't work, the interior lights come on when the doors are open but you can't turn them on manually.
The CEM-1D02 code won't clear. Among many others.

Can I have missed a ground or is it a good assumption that the CEM went bad?

Thanks for the help in advance.

Ron in Ithaca