Causes for error 25
Holding either brake lever when the MODE or POWER button is pressed to power up the bike will result in Error 25.
To check, turn off the bike, make sure both brake levers are in the proper position, and then turn the bike on without squeezing either lever. If the error code still appears, please review the alternative causes below. If you are unable to resolve the issue, please contact support and share pictures and details for assistance
Other possible causes are:
- Damage to the brake lever
- Damage to wire or connection at the internal controller
- The brake lever not springing back into the proper position
If you are unable to resolve the issue, a replacement sensor or brake lever may be needed. While troubleshooting this and determining the cause, you can disconnect these wires from the internal controller so that you can continue to operate your ebike. This can also be helpful in determining which brake lever or sensor is causing the issue if it is not clear from a visual inspection for damage. With the brake sensor wires disconnected, please be mindful that you are not pedaling while braking. If you pedal backwards, or release the throttle, power is cut to the motor as well.
Examples of damaged levers
The lever on the left is not properly returning to position when not in use. The one on the right has a severed wire. Sometimes the damage is not this obvious, so we want to be thorough when inspecting the wire and connection.
The type of sensor located inside the brake levers for these models is shown below. When the brakes are not being used, the sensor is not activated and there are no errors. When the brake lever is squeezed, the button is raised which sends a signal to cut power to the motor.
Installing a new brake lever
If the sensor on the bike does not require replacement, remove these 2 screws shown below to install the sensor that is currently wired in. If a new sensor is needed or new brakes were purchased, the new sensor wire will need to be routed through the brake frame.