Error 13 on the Segway KickScooter P65 means “Motor 1C phrase current sampling failure.” Most likely cause: a fault in the motor, its wiring or the controller's motor current sensing. Try this first: switch off and restart.
Segway's handbook prints "phrase"; it most likely means "phase".
The controller can't run the motor properly. It can come from the motor, its cable or the controller. These are inside the wheel and deck, so leave them to support.
Step-by-step checklist
Work from the top. Steps go from free and easy to shop jobs. Switch the scooter off before touching any connector. Tick each step as you go. Your progress is saved on this device.
When it's time for a shop: if you've worked through every step and the problem is still there, contact the brand's support or an authorized service center. Bring your notes on when it happens, plus the code.