Error code 01E Signal communication fault 02E Throttle fault 03E Battery fault 04E Motor fault 05E Controller fault 06E Motor's Hall fault 07E Brake lever fault 10E Battery protection 11E Battery short-voltage 20E Power button fault 21E Gear button ...
When wires are looped in the same place or zip tie is tighten too much, then in overload condition the wires may get heated and might get damage. This can be observer from controller side. Please check the cable and let us know.
Reboot display and controller (power off/on), check all wiring between battery and controller. Confirm battery fully charged. Contact ENVO with error code if persists.