The following chart applies to Core-5, 500 Series, 700 Series, and the LMT'D

Error codes may only be on the display briefly. If you experience an issue, safely glance at the display to see if there is an error code. If the information below does not resolve the issue please contact support:

21Battery Voltage Error
The battery is not supplying the required voltage to power the display and motor. Use the display to view the real-time voltage (not available on Roadster V2) being output from the battery. It can also be checked (carefully if you have experience) using a volt meter. If the battery is old and has been charged/discharged many times. It may need to be replaced.
Throttle Error
When you press and release the throttle, it should return to the original position. Remove any obstructions. Check the throttle and throttle cable for damage, such as a cut or frayed cable or loose connection point.


Motor Phase Error 

Motor communication or hall sensor error

Check the motor cable connection point by the chainstay. Check the cable connection, disconnecting carefully, make sure it is free from grit or contaminants, properly aligned and firmly connected. This error might appear if you don't reconnect the cable after removing the rear wheel (for example, after changing a flat tire, or transporting your bike in or on on your vehicle). At least one of the motor phase wires has been damaged or is temporarily disconnected. Another possible cause is, damage to the motor cable as it exits the axle, perhaps if the wheel was dropped on the cable or something hit or pulled the cable.
EBS (Electronic Brake Shutoff)

Core-5, 500 Series

Disconnect the electronic brake shut off wire 1 at a time to determine if it is caused by 1 or both. This can happen often after a crash or when the bike is dropped. Inspect both levers for signs of damage or lever not returning to proper position.
25EBS (Electronic Brake Shutoff)
700 Series Tektro Brakes 

700 Series Shimano Brakes 
Disconnect the electronic brake shut off wires 1 at a time to determine if it is caused by 1 or both. This can happen often after a crash or when the bike is dropped. Adjust the brake lever/sensor that is causing motor cut off.
30Communication Error
A problem with the connection from the internal controller to the display. The display is not receiving vital information. Often the issue is a stressed or damaged display cable, however it can be related to the internal controller, and in rare instances the motor.

The chart below applies to Roadster V2