Segway-Ninebot KickScooter E2, E2 Plus and E2 Plus II error codes · Segway-Ninebot E2, E2 Plus and E2 Plus II

Error 40 on Segway-Ninebot E2, E2 Plus and E2 Plus II

What it means + how to fix it From the manual

Quick answer

Error 40 on the Segway-Ninebot KickScooter E2, E2 Plus and E2 Plus II means “Abnormal controller temperature.” Most likely cause: the motor or controller got too hot from a long or hard ride. Try this first: let it cool down.

Try this first

Free, and each takes under 5 minutes.

Let it cool down
Switch off and restart

In plain English

The scooter cuts or limits power when the motor or controller gets too hot. Let it cool down. If it overheats often on normal rides, have it checked.

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.

1Let it cool downFree Switch off and let the scooter sit in the shade for at least 30 minutes. Overheating usually comes from long full-power rides, steep hills or hot weather.
2Switch off and restartFree Turn the scooter off, wait 30 seconds, then turn it back on. If the code clears, note what you were doing when it appeared, in case it comes back.
3Contact support or a service centerShop job If the code stays after these checks, stop riding and contact the brand's customer support or an authorized service center. Don't open the deck, battery, controller or motor: most scooter batteries and controllers aren't user-serviceable.

Still not fixed?

Pages to try next:

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.

Words on this page: Controller