I had a weird issue with a float switch in the tank that was causing something similar on an SL. Might be worth jumping it to see if the car shuts down or not. Of course it could probably be 50 other things and I think you have to have an actual brick tool to talk to them. There are brick programs that work on Miprom 21, escalators, & Miprom SCAMP board but I don’t think any of them work on the SL or HS.
