(05/10/2026)
Update…! In the EV Conversions Reddit forum, a user said that this error is consistent with the resolver and that this would be an interesting failure. With that I decided to check the resolver impedance and it was fine.
i firmly reseated both cables and … It works! I think the large connector was maybe not set in all the way.
whew. Still leaving up the old post, just because. And here it is:
Well, a small setback.
Today when I was bench testing the motor again, I failed to connect the negative to the inverter control board and now the inverter thinks the motor is running at 16,383 RPM. Why this specific value? Well, 16,384 is 14bits, which is a typical bit resolution for an analog to digital converter.
I think I let some smoke out 
Maybe, on the bright side, if the power part of the inverter is ok, I’ll upgrade to an Open Inverter board for some more power…
EV-XJS 