Thank you for your effort,Swoop!

I'm going today to see the truck,in the meantime I received info that the error code is showing totaly random,sometimes on first start in the morning,sometimes after 5 hours of driving... maybe controler is "dying"...

Tnx to your posts in other topic where you mentioned FSIP,I found there very useful things and probably coop whit them.

AC motor controller on it?
pretty sure its a motor controller overheat code

Status Code 41
Traction Motor Controller Overheat

- Pushing or pulling loads can be a cause for overheating the controller
- Stalling the motor too long
- Not enough heat sink grease between controller and heatsink panel.
- cooling fans not operational (if any are installed)

Make sure on this controller model, there are other trucks in this range that have EV100ZX, SEM controllers and EVT100.