E-bike brand
SHIMANO STEPS Error Codes
Error (E) and warning (W) codes for SHIMANO STEPS e-bike systems, from Shimano's official error and warning code list.
About the SHIMANO STEPS (EP8, EP6, E8000, E7000, E6100, E5000 and others)
- From Shimano's official Error & Warning Code page on si.shimano.com, checked October 23, 2026. It is one list for all SHIMANO STEPS systems, not split by model. source
- Shimano's EP801 / EP600 manual and its special battery and parts manual send riders to this page for error codes. source
- The SC-E6100 cycle computer manual also points to this list. An "E" code shown on the entire screen means the product may have malfunctioned. A "W" code means it may have a temporary problem. source
- Shimano also lists 5-digit codes (like E01010 or W10000), but says they are only used in E-TUBE PROJECT Professional, the dealer software. They don't show on the bike, so they are not listed here. source
- Codes can differ between E-TUBE PROJECT Professional and your cycle computer or app. Older displays may show only some of these codes. source
Pick the code on your screen
SHIMANO STEPS error and warning codes, from the official source. 74 codes.
- E010An abnormality was detected in the drive unit.
- E011System error detected.
- E012Sensor initialization could not be completed normally.
- E013Abnormality detected in drive unit’s firmware.
- E014An abnormal bicycle speed signal was detected from the speed sensor.
- E015An abnormality was detected in the drive unit.
- E020Communication error between the battery and drive unit detected.
- E021Battery connected to drive unit conforms with system standards but …
- E022Battery connected to drive unit does not conform with system standa…
- E023Electrical abnormality in battery detected.
- E024Battery overcurrent protection occurred. (Communication error with …
- E025Battery does not recognize the drive unit. (A genuine drive unit i…
- E030Shifting unit different from system configuration is installed.
- E031The chain tension may not yet be adjusted or the crank may not be i…
- E033Current firmware is not supported by this system.
- E034Abnormality detected in drive unit’s firmware.
- E035An abnormality was detected in the bicycle settings.
- E043Abnormality detected in firmware on this product. Part of the firmw…
- E044Error caused by system configuration.
- E050An abnormal bicycle speed signal was detected from the speed sensor.
- E201An abnormality was detected in the drive unit.
- E203An abnormality was detected in the drive unit.
- E206An abnormality was detected in the drive unit.
- E209An abnormality was detected in the drive unit.
- E229An abnormality was detected from the CAN terminal of the drive unit.
- E239An abnormality was detected from the accessory power terminal of th…
- E254Electrical abnormality in battery detected.
- E255Electrical abnormality in battery detected.
- E259Electrical abnormality in battery detected.
- E401An abnormality was detected in the rear derailleur or motor unit.
- E503Electrical abnormality was detected in the freehub.
- E504Electrical abnormality was detected in the freehub.
- E505An abnormality was detected in the sensor in the freehub.
- E609An abnormality was detected in the drive unit.
- E814An abnormality was detected between the units.
- E903An abnormality due to different settings, etc. between units was de…
- E905An incompatible combination of units was detected.
- E906An abnormality was detected between the units.
- E910An incompatible combination of units was detected.
- E914An abnormality was detected between the drive unit and the battery.
- E915The drive unit and battery are incompatible.
- E916An abnormality was detected in the drive unit.
- E925The battery and battery charger are not compatible.
- E934A communication error was detected between the cycle computer and t…
- E944A communication error was detected between the shifter/switch and t…
- E973A setting problem was detected between the freehub and rear deraill…
- W010A high-temperature abnormality was detected in the drive unit.
- W011No bicycle speed signal was detected from the speed sensor.
- W012The crank may be installed in the wrong direction.
- W013Sensor initialization could not be completed normally.
- W020If the temperature exceeds the guaranteed operating range, the batt…
- W030Two or more assist switches are connected to the system.
- W031The chain tension may not yet be adjusted or the crank may not be i…
- W032Shifting unit different from system configuration is installed.
- W103Sensor initialization could not be completed normally.
- W205Sensor initialization could not be completed normally.
- W206An abnormality was detected in the drive unit.
- W207The traveling data could not be updated correctly.
- W208Sensor initialization could not be completed normally.
- W209The traveling data could not be updated correctly.
- W222An abnormality was detected from the CAN terminal of the drive unit.
- W232An abnormality was detected from the accessory power terminal of th…
- W233Power supply to accessories was stopped due to high temperature abn…
- W240An abnormality was detected in the drive unit.
- W242An abnormality was detected from the front/rear light terminal of t…
- W256The power was turned OFF due to the temperature exceeding the guara…
- W292No bicycle speed signal was detected from the speed sensor.
- W935A communication error was detected between the cycle computer and t…
- W945A communication error was detected between the shifter/switch and t…
- W954A communication error was detected between the rear shifting unit a…
- W960A communication error was detected between the CAN connection devic…
- W965The drive unit and CAN connection device are not compatible.
- W966The drive unit and CAN connection device are not compatible.
- W967The E-BIKE functions are restricted because the E-BIKE system lock …