SHIMANO STEPS error and warning codes · SHIMANO STEPS

W030 Error on SHIMANO STEPS

What it means + how to fix it From the brand

Quick answer

W030 on the SHIMANO STEPS (EP8, EP6, E8000, E7000, E6100, E5000 and others) means “Two or more assist switches are connected to the system..” Most likely cause: holding the power button while switching on, or a stuck button. Try this first: release the power button.

Try this first

Free, and each takes under 5 minutes.

Release the power button
Turn it off and on again

Code meanings vary by brand. The same number can mean different things on different displays and controllers. Check your bike's manual to confirm.

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

In plain English

This code points to the power button or keypad. Bafang's E162 manual says holding the power button while the display turns on triggers it, so release the button first. A stuck or wet button pad is the next most likely cause.

Step-by-step checklist

Work from the top. Steps go from free and easy to shop jobs. Switch the bike off before touching any connector. Tick each step as you go. Your progress is saved on this device.

1Release the power buttonFree Make sure you're not still holding the power button as the display turns on. Release it and see if the code clears.
2Turn it off and on againFree Switch the display off, wait 30 seconds, then switch it back on. If the code clears, note what you were doing when it appeared, in case it comes back.
3Check for a stuck buttonEasy Press each button on the handlebar pad a few times. A button stuck down by dirt or water can send commands non-stop. Clean around it and check the pad's cable and plug.
4Have the controller testedShop job If the wiring checks out, the controller may be faulty. A shop can test it and replace it if needed.

Parts you might need

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Only buy a part if the free steps didn't fix it. Always match the voltage and connector type to your bike.

Display button pad (remote)
Replaces a sticky or broken handlebar button pad. Must match your display.
Match your bike's model first. Ask a shop if unsure.

Still not fixed?

Pages to try next:

When it's time for a shop: if you've worked through every step and the problem is still there, take the bike to an e-bike shop. Bring your notes on when it happens, plus the code.

Words on this page: Controller