When your e-bike displays Error Code E24 or E36, it usually indicates a communication failure between the motor and the controller, or an internal motor fault. This guide will help you identify the root cause and walk you through the correct troubleshooting process to restore normal operation.
For AQ177 Dual-Motor Models
Controller Type:
The AQ177 model uses an integrated controller, meaning both the front and rear motors share the same control unit.
When diagnosing, it’s important to focus on the connections between the motors and the controller.
Diagnostic Steps:
-
Check All Motor Connections
Make sure the motor cables and controller plugs are properly connected and not loose.
Inspect all cables for signs of wear, cuts, or visible damage. -
Determine the Fault Based on Motor Behavior
- Front motor works, rear motor not working → Replace the rear motor
- Rear motor works, front motor not working → Replace the front motor
- Both motors not working → Replace the controller
-
Provide Video Evidence and Details
- Record a troubleshooting video showing the issue and send it to sales@aniioki.com.
- If a motor replacement is needed, provide a photo of the motor serial number (you can find it on the top of the motor shell by spinning the wheel).
-
- If a controller replacement is required, provide a photo of the controller label.
-
For A8 / A9 Dual-Motor Models
If your bike is an A8 or A9 dual-motor version, please follow the steps below to test each motor.
Testing Procedure:
-
Switch the display to Front-Drive Mode, and check if the front motor operates normally.
-
Switch the display to Rear-Drive Mode, and check if the rear motor operates normally.
If the Front Motor Does Not Work:
-
Disconnect the rear motor wire from the rear controller wire.
-
Connect the rear motor wire to the front controller wire.
-
Set the display to Front-Drive Mode, then twist the throttle to test.
Determine the Result:
-
If the rear motor works when connected to the front controller, the front motor is faulty and should be replaced.
-
If the rear motor doesn’t work too, the front controller is faulty and should be replaced.
⚠️Important Notes
-
There is no need to swap or remove the physical controller boxes — simply swap the motor cables for testing.
-
If the cables are too short, you can cut the zip ties to gain extra length for easier connection.
-
Ensure the bike’s power is turned off during testing to avoid short circuits or component damage.
What to Provide After Diagnosis:
If it’s confirmed to be a motor issue, please provide:
-
A photo of the motor serial number (located on the side or top of the motor shell).
-
A troubleshooting video showing the problem.
If it’s confirmed to be a controller issue, please provide:
-
A photo of the controller label.
-
A troubleshooting video showing the problem.
Conclusion
By following the above steps, you can quickly identify whether the issue lies with the motor or the controller, allowing you to resolve the problem efficiently.
If you need further assistance, please contact our support team at sales@aniioki.com — we’re always here to help.
