Yozma IN 10 status code list · Yozma IN 10 & IN 10 Pro

E12 Error on Yozma IN 10 & IN 10 Pro

What it means + how to fix it From the manual

Quick answer

E12 on the Yozma IN 10 / IN 10 Pro means “BMS Communications Error.” Most likely cause: the battery's management system has stopped talking to the controller. Try this first: switch off and restart.

Try this first

Free, and each takes under 5 minutes.

Switch off and restart
Check the outside of the battery (don't open it)

In plain English

The controller can't get data from the battery's management system. A restart sometimes clears it. If it stays, a dealer can check the battery's connections.

Step-by-step checklist

Work from the top. Steps go from free and easy to shop jobs. Switch the bike off before touching any connector. Tick each step as you go. Your progress is saved on this device.

1Switch off and restartFree Turn the bike off with its key or power switch, 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.
2Check the outside of the battery (don't open it)Free Look at the battery case only. If it's swollen, cracked, leaking, very hot or smells, don't ride or charge it, move it away from anything flammable if it's safe to, and contact your dealer. If it smokes, get everyone out and call 911.
3Contact an authorized dealerShop job If the code stays after these checks, stop riding and contact an authorized dealer for your brand. The battery, motor, controller and high-voltage wiring are for trained technicians only. Don't open them or unplug high-voltage connectors.

Still not fixed?

Pages to try next:

All Yozma IN 10 / IN 10 Pro codes

When it's time for a shop: if you've worked through every step and the problem is still there, contact an authorized dealer for your brand. Bring your notes on when it happens, plus the code.

Words on this page: Controller BMS (battery management system)