Has anyone seen this code? Training Failed TP Fault Code: C8001

I put in new sensors a couple of years ago and just now got the time to get them working. Have a drb3 emulator and each time I clear the DTCs, this one comes back instantly or maybe never clears. I can't get any of the sensors to train with the drb3, it just sits at the left front then times out.

Looked all over the service manuals, but no luck with this code. Could the TPMS receiver be cooked? If all else fails, there is always the well documented disconnect.