Hello everyone,
After encountering the warning codes of Shimano E-bike motors (in my case, Steps EP600 (EP6 2024)), I have created a small table of the main Error and Warning codes, with possible causes and solutions or repairs. It is even recommended to print it out for reference in case of a breakdown in the middle of the mountains.
I am sharing it below and hope it helps.
SHIMANO ERROR CODES: Cause & remedy
SHIMANO WARNING CODES: Cause & remedy
For more information, you can consult the Shimano link https://si.shimano.com/en/error
Regards!
After encountering the warning codes of Shimano E-bike motors (in my case, Steps EP600 (EP6 2024)), I have created a small table of the main Error and Warning codes, with possible causes and solutions or repairs. It is even recommended to print it out for reference in case of a breakdown in the middle of the mountains.
I am sharing it below and hope it helps.
SHIMANO ERROR CODES: Cause & remedy
Error Code | Cause | Remedy |
E010 | An abnormality was detected in the drive unit. | Check motor connections and wiring. |
E01000 - E01004 | A Sensor abnormality was detected in the drive unit. | Inspect sensor connections and functionality. |
E01010, E01011 | A Sensor abnormality was detected in the drive unit. | Inspect sensor connections and functionality. |
E01020 - E01022 | A Sensor abnormality was detected in the drive unit. | Inspect sensor connections and functionality. |
E01030 | Sensor failure was detected in the drive unit. | Replace or repair the sensor in the drive unit. |
E01040 - E01042 | A malfunction was detected in the drive unit motor. | Check motor connections and inspect for internal motor damage. |
E01050, E01051 | Sensor failure was detected in the drive unit. | Replace or repair the sensor in the drive unit. |
E011 | System error detected. | Restart the system and check for any updates. |
E012 | Sensor initialization could not be completed normally. | Restart the system and ensure proper initialization. |
E013 | Abnormality detected in drive unit’s firmware. | Update or reinstall the drive unit firmware. |
E014 | An abnormal bicycle speed signal was detected from the speed sensor. | Inspect the speed sensor and its connections. |
E015 | An abnormality was detected in the drive unit. | Check all connections in the drive unit. |
E01500 | A communication error was detected between the microcontrollers inside the drive unit. | Check internal microcontroller connections and replace if necessary. |
E020 | Communication error between the battery and drive unit detected. | Inspect battery connections and communication cables. |
E02000 | Communication error between the battery and drive unit detected. | Inspect battery connections and communication cables. |
E021 | Battery connected to drive unit conforms with system standards but is not supported. | Replace the battery with a supported model. |
E022 | Battery connected to drive unit does not conform with system standards. | Replace the battery with one that conforms to system standards. |
E023 | Electrical abnormality in battery detected. | Inspect battery and electrical connections. |
E024 | Battery overcurrent protection occurred. (Communication error with the bicycle system) | Restart the system and check for communication issues. |
E025 | Battery does not recognize the drive unit. (A genuine drive unit is not connected, or the power cord is disconnected.) | Ensure the genuine drive unit is connected properly. |
E030 | Shifting unit different from system configuration is installed. | Replace the shifting unit with the correct configuration. |
E031 | The chain tension may not yet be adjusted or the crank may not be installed in the proper position. | Adjust the chain tension or reinstall the crank properly. |
E033 | Current firmware is not supported by this system. | Update firmware to a supported version. |
E034 (E013) | Abnormality detected in drive unit’s firmware. | Update or reinstall the drive unit firmware. |
E03400 | Abnormality detected in drive unit’s firmware. | Update or reinstall the drive unit firmware. |
E035 | An abnormality was detected in the bicycle settings. | Check and update bicycle settings. |
E03500 | An abnormality was detected in the bicycle settings. | Check and update bicycle settings. |
E043 | Abnormality detected in firmware on this product. Part of the firmware may be corrupted. | Reinstall the firmware to correct the corruption. |
E044 | Error caused by system configuration. | Review and correct system configuration. |
E050 (E014) | An abnormal bicycle speed signal was detected from the speed sensor. | Inspect the speed sensor and its connections. |
E05000 | An abnormal bicycle speed signal was detected from the speed sensor. | Inspect the speed sensor and its connections. |
E201 | An abnormality was detected in the drive unit. | Check all connections in the drive unit. |
E203 | An abnormality was detected in the drive unit. | Check all connections in the drive unit. |
E206 | An abnormality was detected in the drive unit. | Check all connections in the drive unit. |
E209 | An abnormality was detected in the drive unit. | Check all connections in the drive unit. |
E229 | An abnormality was detected from the CAN terminal of the drive unit. | Inspect the CAN terminal connections. |
E239 | An abnormality was detected from the accessory power terminal of the drive unit. | Inspect the accessory power terminal connections. |
E254 | Electrical abnormality in battery detected. | Inspect battery and electrical connections. |
E255 | Electrical abnormality in battery detected. | Inspect battery and electrical connections. |
E259 | Electrical abnormality in battery detected. | Inspect battery and electrical connections. |
E295 | An abnormal bicycle speed signal was detected from the speed sensor. | Inspect the speed sensor and its connections. |
E299 | The drive unit entered the Safe Mode because tampering was detected. | Check for tampering and restart the system. |
E401 | An abnormality was detected in the rear derailleur or motor unit. | Inspect the rear derailleur and motor unit connections. |
E503 | Electrical abnormality was detected in the freehub. | Inspect freehub electrical connections. |
E504 | Electrical abnormality was detected in the freehub. | Inspect freehub electrical connections. |
E505 | An abnormality was detected in the sensor in the freehub. | Inspect the sensor in the freehub and replace if necessary. |
E803 | A setting problem was detected between the freehub and rear derailleur. | Correct the settings between the freehub and rear derailleur. |
E814 | An abnormality was detected between the units. | Inspect connections between units. |
E903 | An abnormality due to different settings, etc. between units was detected. | Update or correct settings between units. |
E905 | An incompatible combination of units was detected. | Replace incompatible units with compatible ones. |
E906 | An abnormality was detected between the units. | Inspect connections between units. |
E910 | An incompatible combination of units was detected. | Replace incompatible units with compatible ones. |
E914 | An abnormality was detected between the drive unit and the battery. | Inspect connections between the drive unit and battery. |
E915 | The drive unit and battery are incompatible. | Replace the drive unit or battery with compatible ones. |
E925 | The battery and battery charger are not compatible. | Replace the battery or charger with compatible ones. |
E934 | A communication error was detected between the cycle computer and the drive unit. | Inspect communication connections between the cycle computer and drive unit. |
E944 | A communication error was detected between the shifter/switch and the drive unit. | Inspect communication connections between the shifter/switch and drive unit. |
SHIMANO WARNING CODES: Cause & remedy
Warning Code | Cause | Remedy |
W010 | A high-temperature abnormality was detected in the drive unit. | Allow the drive unit to cool down. |
W011 | No bicycle speed signal was detected from the speed sensor. | Inspect the speed sensor and its connections. |
W012 | The crank may be installed in the wrong direction. | Reinstall the crank in the correct direction. |
W013 | Sensor initialization could not be completed normally. | Restart the system and ensure proper initialization. |
W020 | If the temperature exceeds the guaranteed operating range, the battery output stops. | Allow the battery to cool down before use. |
W032 | Shifting unit different from system configuration is installed. | Replace the shifting unit with the correct configuration. |
W030 | Two or more assist switches are connected to the system. | Disconnect the extra assist switches. |
W031 | The chain tension may not yet be adjusted or the crank may not be installed in the proper position. | Adjust the chain tension or reinstall the crank properly. |
W10000 (W010) | A high-temperature abnormality was detected in the drive unit. | Allow the drive unit to cool down. |
W10100 (W011) | No bicycle speed signal was detected from the speed sensor. | Inspect the speed sensor and its connections. |
W103 | Sensor initialization could not be completed normally. | Restart the system and ensure proper initialization. |
W10300 | Sensor initialization could not be completed normally. | Restart the system and ensure proper initialization. |
W10600 | Sensor initialization could not be completed normally. | Restart the system and ensure proper initialization. |
W20000 (W020) | The power was turned OFF due to the temperature exceeding the guaranteed operating range. | Allow the battery to cool down before use. |
W30200 (W032) | Shifting unit different from system configuration is installed. | Replace the shifting unit with the correct configuration. |
W205 | Sensor initialization could not be completed normally. | Restart the system and ensure proper initialization. |
W206 | An abnormality was detected in the drive unit. | Check all connections in the drive unit. |
W207 | The traveling data could not be updated correctly. | Update the traveling data correctly. |
W208 | Sensor initialization could not be completed normally. | Restart the system and ensure proper initialization. |
W209 | The traveling data could not be updated correctly. | Update the traveling data correctly. |
W222 | An abnormality was detected from the CAN terminal of the drive unit. | Inspect the CAN terminal connections. |
W232 | An abnormality was detected from the accessory power terminal of the drive unit. | Inspect the accessory power terminal connections. |
W233 | Power supply to accessories was stopped due to high temperature abnormality detected in the drive unit. | Allow the drive unit to cool down before use. |
W240 | An abnormality was detected in the drive unit. | Check all connections in the drive unit. |
W242 | An abnormality was detected from the front/rear light terminal of the drive unit. | Inspect the front/rear light terminal connections. |
W256 | The power was turned OFF due to the temperature exceeding the guaranteed operating range. | Allow the battery to cool down before use. |
W292 | No bicycle speed signal was detected from the speed sensor. | Inspect the speed sensor and its connections. |
W935 | A communication error was detected between the cycle computer and the drive unit. | Inspect communication connections between the cycle computer and drive unit. |
W945 | A communication error was detected between the shifter/switch and the drive unit. | Inspect communication connections between the shifter/switch and drive unit. |
W954 | A communication error was detected between the rear shifting unit and the drive unit. | Inspect communication connections between the rear shifting unit and drive unit. |
W960 | A communication error was detected between the CAN connection device and the drive unit. | Inspect communication connections between the CAN connection device and drive unit. |
W965 | The drive unit and CAN connection device are not compatible. | Replace the drive unit or CAN connection device with compatible ones. |
W966 | The drive unit and CAN connection device are not compatible. | Replace the drive unit or CAN connection device with compatible ones. |
For more information, you can consult the Shimano link https://si.shimano.com/en/error
Regards!
Last edited:
