⚠ This is an electric dirt bike (e-moto), not an e-bike
It's a high-voltage off-road motorcycle. Yozma's FAQ says the IN 10 Pro is recommended for riders aged 14 and above. Many states and cities treat these as off-road motorcycles, so check your state's off-road vehicle (OHV) rules before riding anywhere public, and always wear a helmet and protective gear.
Only do the safe checks on this page. The battery, motor, controller and high-voltage wiring are for trained technicians: never open them or unplug high-voltage connectors. For anything else, contact an authorized Yozma dealer. About e-moto codes on this site
Quick answer
E04 on the Yozma IN 10 / IN 10 Pro means “Walk Assist Mode.” This is a normal mode, not a fault. To clear it: let go of the walk-assist button.
Code meanings vary by brand. The same number can mean different things on different displays and controllers. Check your bike's manual to confirm.
About the Yozma IN 10 / IN 10 Pro
The IN 10 (V2) and IN 10 Pro (V1) manuals list the same status codes. E03 and E11 aren't in the list. source Several codes are normal modes, not faults: E00 (normal), E04 (walk assist) and E05 (cruise). source
In plain English
Walk assist moves the bike slowly while you walk beside it. The code shows while it's on. It isn't a fault.
⚠ When to stop and get a shop
Electric dirt bikes run on high-voltage batteries and powerful motors, far stronger than most e-bikes. The battery, motor, controller and high-voltage cables are for trained technicians only: never open them or unplug high-voltage connectors. If these checks don't clear the code, contact an authorized dealer.
Anything inside the battery, the controller, the motor or the high-voltage wiring is a job for an authorized dealer.
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 an authorized dealer for your brand. Bring your notes on when it happens, plus the code.
Sources
Written and checked by Kazolt against the sources above. Last checked: October 22, 2026. How we write our fixes
Does E04 mean something different on your bike? Let us know so we can fix this page.