Ninebot Max Error Code 40
If your Ninebot Max is beeping or has a red wrench icon and flashes this code, read below.
"Control Board Temperature Sensor is abnormal. Please check the Control Board."
If you clicked the wrong error code, go back to the Error Code Index.
Previous Error Code: Ninebot Max Error Code 39 - Next Error Code: Ninebot Max Error Code 41
Cause
This can be caused by an issue with the temperature sensor on the ESC/Controller.
That can be due to overheating/under temperature or a wiring fault.
Fix
Make sure the temperature reported is not outside of the rated values.
Confirm that all wiring harnesses are securely in place.
If all else fails replace the controller.