Error 42 Ninebot ES2-ES4
 

Hi . I repair electric scooters. And I encountered error 42. On a Ninebot ES2-ES4 scooter. Someone may have met with this and can help me. Just do not write for poor contact with an external battery. I have already checked and refuted this version. I would be very grateful for any information regarding 42 errors.
Ps. Sorry for the broken English language. Because I used Google Translate because my level of English doesn't allow me to write what I want.