All Electric Bike Error Codes! The Full List With Causes And Solutions!
Suddenly the support of the motor has disappeared, you break out in a sweat and a mysterious error code flashes alarmingly on the display of your bicycle.
What does your E-MTB want to tell you and what do you need to do to keep riding? Anyone who regularly checks the Internet knows it: “Error 404 – Page not found”.
Also, electric mountain bikes and trekking bikes have error codes that are displayed when something in the system is not functioning properly. Errors can occur, for example, if a sensor is not set correctly, if a signal is interrupted or if there is something wrong with the software.
Before we dive deeper into the error codes of the individual systems, here are some general tips to help resolve the most common problems:
-Turn off the bike completely for about 10 seconds, just like with PCs, rebooting can work wonders.
-Check the battery, is it correctly installed and sufficiently charged?
-Are all contacts intact? Check that the display is properly paired and check the connection points that are easily accessible.
-Is the spoke magnet properly adjusted or have you lost it? If the magnet is missing, the motor will not be able to determine the speed correctly and will go into emergency mode or stop providing support altogether.
If the above tips didn’t work, it may help to review the error code and check what it means. Listed below are the most common error codes and their solutions.
Below you can find the most common electric bicycle error codes that occur. Below this table are brand-specific error codes from Bosch, Yamaha and Shimano E-bikes.
General Error Codes
| E01 | Battery pack empty |
| E02 | Battery outside temperature limits during charging |
| E03 | Battery defective |
| E04 | Battery connected to the charger |
| E05 | Communication |
| E06 | Short circuit in the lighting |
| E07 | Motor outside temperature limit |
| E08 | Problem with the motor sensor or connection problem |
| E09 | Electronic problem in the motor or controller |
| E10 | Software not installed properly |
| E11 | Electronics problem in battery pack |
| E12 | Fault in battery electronics or motor (connection) |
| E13 | The display does not work; the code is not visible |
| E14 | Display unknown / not registered |
| E15 | Battery voltage too low |
| E16 | Constant deflection force sensor |
| E17 | Maximum motor current reached |
| E18 | The voltage difference between battery cells |
| E19 | Battery pack outside temperature limit |
| E20 | Service required |
| E21 | Motor current reduced due to high temperature |
| E22 | Charging problem |
| E23 | Unknown battery pack |
| E24 | Two main battery packs connected |
| E25 | Bicycle is not made roadworthy |
| E26 | Bad internal communication in the engine |
| E27 | Internal fault in the engine |
| E28 | The engine has been reset |
| E29 | No communication with the control unit |
| E30 | No communication with the torque sensor |
| E31 | Short circuit in accessory connection |
| E32 | Electronics in battery pack too hot |
| E33 | The balancing circuit does not function |
| E34 | The Control unit supports no accessories |
| E35 | No communication with the throttle |
| E36 | No communication with the heart rate receiver |
| E37 | No communication with the battery circuit |
| E38 | Excessive current in idle state |
| E39 | The wrong charger connected |
| E40 | Overcurrent protection input has intervened |
| E41 | Overcurrent protection has intervened |
| E42 | The voltage difference between total cell voltage and measured battery voltage |
| E43 | The temperature in one or more cells too high |
| E44 | The motor is charging the battery pack |
| E45 | The motor controller is too hot |
| E46 | Temp. engine sensor out of bounds/connection problem between the engine and AUM |
| E99 | New part fitted; replace bicycle software |
Error codes Bosch Electric Bicycles
Bosch bicycle motors are widely used on electric bicycles. Bosch innovates and continues to develop so that it can remain at the forefront of the e-bike market. In this list, you will find common error codes, what could be the cause of these codes, and what a possible solution is. If in doubt, always contact an authorized two-wheeler specialist.
Error code 410 One or more keys of the control computer are blocked.
Check whether any keys are jammed, e.g. due to dirt. Clean the keys if necessary.
Error code 414 Control
unit connection problem Have connections and connections checked
Error code 418 One or more buttons on the control unit are blocked.
Check whether any keys are jammed, eg by grease. Clean the keys if necessary.
Error code 422 Drive unit
connection problem Have connections and connections checked
Error code 423 Battery
connection problem Have connections and connections checked
Error code 424 Communication error between the components
Have connections and connections checked
Error code 426 Internal timeout error
Restart the system. If the problem is not solved, contact your Bosch e-bike dealer.
Error code 430 Internal battery of the control computer is empty
Charge the control computer (in the holder or via a USB connection)
Error code 440 Internal error of drive unit
Restart the system. If the problem is not solved, contact your Bosch e-bike dealer.
Error code 450 Internal software error
Restart the system. If the problem is not solved, contact your Bosch e-bike dealer.
Error code 490 Internal error of the control
computer checked.
Error Code 500 Drive Unit Internal Error
Restart the system. If the problem is not solved, contact your Bosch e-bike dealer.
Error code 502 Error in the lighting
Check the light and associated wiring. Restart the system. If the problem is not solved, contact your Bosch e-bike dealer.
Error code 503 Speed sensor error
Restart the system. If the problem is not solved, contact your Bosch e-bike dealer.
Error code 510 Internal sensor error
Restart the system. If the problem is not solved, contact your Bosch e-bike dealer.
Error Code 511 Drive Unit Internal Error
Restart the system. If the problem is not solved, contact your Bosch e-bike dealer.
Error code 530 Battery error
Switch off the e-bike, remove the battery and reinsert the battery. Restart the system. If the problem is not solved, contact your Bosch e-bike dealer.
Error Code 531 Configuration Error
Restart the system. If the problem is not solved, contact your Bosch e-bike dealer.
Error code 540 Temperature error
The e-bike is outside the permitted temperature range. Switch off the e-bike system to allow the drive unit to cool down or warm up to the permitted temperature range. Restart the system. If the problem is not solved, contact your Bosch e-bike dealer.
Error code 550 An unauthorized consumer has been detected.
Remove the consumer. Restart the system. If the problem is not solved, contact your Bosch e-bike dealer.
Error code 602 Internal battery error during charging
Separate the charger from the battery. Restart the e-bike system. Connect the charger to the battery. If the problem is not solved, contact your Bosch e-bike dealer.
Error code 602 Internal battery error
Restart the system. If the problem is not solved, contact your Bosch e-bike dealer.
Error code 603 Internal battery error
Restart the system. If the problem is not solved, contact your Bosch e-bike dealer.
Error code 605 Battery temperature error
The e-bike is outside the permitted temperature range. Switch off the e-bike system to allow the drive unit to cool down or warm up to the permitted temperature range. Restart the system. If the problem is not solved, contact your Bosch e-bike dealer.
Error code 605 Battery temperature error during charging
Separate the charger from the battery. Let the battery cool down. If the problem is not solved, contact your Bosch e-bike dealer.
Error code 606 External battery error
Check the wiring. Restart the system. If the problem is not solved, contact your Bosch e-bike dealer.
Error code 610 Battery voltage error
Restart the system. If the problem is not solved, contact your Bosch e-bike dealer.
Error code 620 Charger error
Replace the charger. Contact your Bosch e-bike dealer.
Error code 640 Internal battery error
Restart the system. If the problem is not solved, contact your Bosch e-bike dealer.
Error code 655 Multiple battery error
Switch off the e-bike system. Remove the battery and reinsert it. Restart the system. If the problem is not solved, contact your Bosch e-bike dealer.
Error code 656 Software version error
Contact your Bosch e-bike dealer so that he or she performs a software update.
Error code No indication Internal error of the control
computer Restart your e-bike system by switching it off and on again
Shimano Steps E-bike error codes
The Shimano STEPS E8000 is the most used motor on the market after the Bosch Performance CX, below we list the 3 most common Error Messages:
| Error | Cause | Restriction of operation when an error is displayed | Remedy |
| W013 | The torque sensor may not be fully initialized. | The support may be less than usual, or it may fail completely. | Remove the feet from the pedals, press the battery switch and restart the system. Important: Do not apply pressure to the pedals while switching them on and off. |
| W011 | The vehicle speed is not detected. | The maximum speed at which support is provided may be less than normal. | Check that the speed sensor is installed correctly and that the spoke magnet is in the correct position. The distance from the speed sensor (note the markings) on the rear fork to the spoke magnet should be between 3 and 17 mm. |
| W010 | The motor temperature is higher than during normal operation. | Support may be less than usual. | Take a break and wait for the engine temperature to drop. The support function should not be used until then. |
Yamaha E-bike Error Codes
The Japanese manufacturer Yamaha is considered a pioneer of e-bike engines and has been producing them en masse since 1993. Giant has been building its eMTBs with Yamaha engines since 2013. In addition to Bosch motors, Haibike has been relying on Yamaha systems since 2014. Yamaha’s situation is similar to Brose’s because bike manufacturers can equip their eMTB with their own screen, battery, etc. Because the bike manufacturer doesn’t have to use the complete Yamaha system, there are no uniform error codes for eMTBs with Yamaha engines. However, there are some common error codes that we list below:
| Error code | Cause | Solution |
| SPD SNSR/ CHK MAGNET | The spoke magnet on the rear wheel is twisted. | As described on the display, the position of the spoke magnet must be checked. If this is OK, the dealer should check the wiring and connector. |
| 31/32 | The cable connection torque sensor and controller are defective. / Cable defective between coil and printed circuit board (loose contact, cable disconnected). | If the system does not detect any errors, it can return to normal operation after a reboot. Otherwise, the torque sensor or controller must be replaced. |
| 33–37 | Abnormal standby voltage or abnormal voltage during operation. | If the system does not detect any errors, it can return to normal operation after a reboot. (If the system detects the same error multiple times, it cannot return to normal operation even after it is reset.)1. Set the reference voltage of the torque sensor.2. Replace the torque sensor.3. Replace the controller. |
| 38 | The torque sensor or pedal crank sensor is defective. | Replace the torque sensor, controller, or drive shaft. |
| 39 | Short circuit or crank sensor defective. | Replace the controller or drive shaft. |
Conclusion
A large number of error messages are easy to solve yourself. These are often caused by loose plugs and connectors between the drive unit, battery, display, or controller. For more complex error messages, we recommend making an appointment with an authorized bicycle repairer.
