Ninebot Es2 Error 18 and won't turn on
 

Hey

So i got the es2 second hand. 2 weeks ago, and then installed the external battery on it. After that i started getting the error 18 code. But today in the morning when i turned it on, i got the error 18 again. and after i turned it off it won't turn on again. And now i haven't been able to turn it on for some hours.
I then disassembled the WHOLE scouter to see if i could see a problem, but i haven't got much experience, so i don't know what to look for.

When i connect all the parts and push the button there is a little red light on the controlboard that flashes. I don't know what this means. How do i know if it's the display/ or control board that's broken. And Is there any posssible fixes for this.?

Is it like a flashing red spanner? I had that after my dashboard froze one. I removed the top section just below handle bars and unplugged & reconnected the internal battery connector and that solved my flashing issue. If this doesn’t work I’d take it in to get checked

is the output voltage of the battery in normal range?

According to the Segway Ninebot kickscooter ES2 Error Code list the following is listed:

Code 18:

Error phenomenon and solution:
Motor hall abnormal, Check motor, Control board, Connected cable.

Malfunction part:
Control board, Motor.