During the use of your e-bike, if the display shows Error Code E17, E25, or E37, accompanied by symptoms such as failure to accelerate properly, loss of power, or a continuously illuminated brake warning icon, the issue is typically related to the brake cut-off system. These error codes are commonly caused by a malfunctioning brake sensor, a stuck brake lever, loose wiring connections, or damaged brake-related components.
Since error codes E17, E25, and E37 all indicate brake system-related abnormalities, they will be collectively referred to as “brake faults” throughout this article for ease of explanation.
This guide will walk you through step-by-step troubleshooting for brake faults and provide corresponding solutions. In most cases, the root cause can be identified through a few simple checks. After completing the troubleshooting process, you can share the results with our after-sales support team so we can quickly determine the faulty component and arrange a replacement if necessary.
What is a Brake Fault?
During the use of your ANIIOKI e-bike, if the display shows a brake fault, accompanied by the following symptoms:
- The bike fails to accelerate properly
- Throttle is unresponsive or power is intermittently cut off
- Pedal assist is not functioning correctly
- The brake warning icon remains continuously illuminated
this typically indicates that the brake cut-off system (Brake Sensor System) has detected an abnormal condition.
The brake cut-off system is designed to immediately interrupt motor power when the brake lever is engaged, ensuring riding safety. When a fault occurs in this system, it may incorrectly detect a continuous braking signal or fail to reset properly, resulting in power loss or inability to ride normally.
Common Causes of Brake Faults
Brake faults on your ANIIOKI e-bike are commonly caused by the following:
- The brake lever does not fully return to its resting position.
- A faulty or damaged brake sensor.
- Loose or disconnected brake cut-off wiring connections.
Brake Error Code Troubleshooting Guide
First, we need to confirm whether the error code is caused by the left brake or the right brake.
Please follow the steps below to check:
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Disconnect the left brake power cut-off cable
- Turn on the display and check whether the error code disappears.
- If the error code disappears after disconnecting the left brake cable, this indicates that the issue is caused by the left brake cut-off cable. In this case, the left brake cut-off cable needs to be replaced.
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If the error code remains after disconnecting the left brake cable
- Reconnect the left brake cable.
- Then disconnect the right brake power cut-off cable and check the display again.
- If the error code disappears after disconnecting the right brake cable, this indicates that the issue is caused by the right brake cut-off cable. In this case, the right brake cut-off cable needs to be replaced.
Warranty Replacement Support
After completing the troubleshooting steps above and confirming which side of the brake cut-off cable is causing the issue, please send us the troubleshooting video showing the test results.
If your order is still within the warranty period, our support team will review the information and arrange a replacement brake cut-off cable for you as soon as possible.
Brake Cut-Off Cable Replacement Video
Please refer to the following video for detailed instructions on how to replace the brake power cut-off cable:
Need Further Assistance?
If the error code remains after testing both brake cables, please contact our support team and provide:
- A photo or video of the display showing the error code
- The results of the left and right brake cable tests
- Your bike model and order information
Our support team will help you identify the cause and provide the appropriate solution.
Conclusion
Brake error codes are commonly related to the brake power cut-off system. By testing the left and right brake cut-off cables separately, you can quickly identify which side is causing the issue and determine the correct replacement part.
Following the troubleshooting steps in this guide can help you diagnose the problem more efficiently and avoid unnecessary part replacements.
