Bosch Smart System error codes: the six-digit list

You pull your bike out, switch it on, and the little light on your remote starts blinking orange. Or the display pops up a six-digit number you've never seen. Most Bosch code lists online are for the older system, with three-digit codes like 503 or 605. Those don't apply here.

Is your bike on the Smart System?

Bosch sells two current generations. Its US downloads page sorts manuals into "Smart system" and "Bosch eBike system 2." The quickest tell is what's on your handlebar or top tube.

Bosch's US displays page lists these as Smart System parts:

• Displays: Kiox 300, Kiox 400C, Kiox 500, Purion 200, Purion 400, Intuvia 100, Intuvia 200
• Remotes and controllers: LED Remote, System Controller (in the top tube), Mini Remote, Mini Remote Dropbar
• Phone mounts: SmartphoneGrip and SmartphoneGrip Vertical, which use your phone running eBike Flow as the display

The other tell is the app. Smart System bikes pair with eBike Flow, and Bosch's manuals for these parts say you need it for full function. If your bike has a Kiox, Nyon or Purion with no number after the name (Bosch files those under eBike system 2) and shows a three-digit code, you're on the older system. Use our Bosch error codes list instead.

How the Smart System shows an error

Bosch's manuals split errors into two kinds, and the color tells you which.

Less critical errors. On the LED Remote, System Controller and Mini Remote, the assistance level LED flashes orange. You acknowledge it with the select button (Mini Remote, LED Remote) or the mode button (System Controller), and the LED goes back to showing your assistance level. Bosch's 2024 edition words it slightly differently: orange flashing, then the riding mode LED lights steadily.

Critical errors. The assistance level LED and the battery charge indicator flash red. Bosch's 2024 edition adds that they then stay lit.

On a screen. Bosch's Purion 200 instructions (in Gazelle's and Trek's copies) say error messages appear in a pop-up on the display, and you clear a less critical one with the select button.

Every Smart System manual we read says the same about the full details: error messages "can be read via the eBike Flow app or by your bicycle retailer," and a link in the app shows information about the error and support for fixing it. So if your remote only flashes a color, open eBike Flow to get the actual code.

Smart System codes Bosch prints in its manuals

These are the only codes we found with a meaning in an official Bosch manual or a bike maker's copy of one. Bosch's US manual for the System Controller and Mini Remote (March 2023) has the 523005/514xxx, 660002, 6A0004 and 890000 rows. Cube's copy of the 2024 edition and Trek's June 2024 Smart System manual add the 680 battery temperature rows. Gazelle's US copy adds 660001 in its LED Remote table.

Bosch doesn't publish what the digits in a code stand for, so we won't guess at a pattern. If your code isn't above, that's expected: Bosch only prints this owner-level table, and its manuals send you to eBike Flow, the Bosch eBike Help Center or your dealer for the rest. The help center was down for maintenance when we checked, so nothing here comes from it.

Safe checks you can do

All of these come straight from Bosch's manuals or the bike makers' copies. None needs tools.

1. Note the code and the color. Orange or red, and the number from eBike Flow or the display.
2. Acknowledge and restart. Press the select or mode button to acknowledge, then switch the system off and on. That's Bosch's first step for 890000 and 6A0004.
3. Look for the wheel magnet on a 523005 or 514xxx code. If it's gone or knocked out of line, that's likely your answer. A dealer can replace or set it.
4. Let the battery warm up or cool down on a 680xxx code. Charging resumes on its own once it's back in range. On the charger, Gazelle's copy of the Bosch manual says three flashing LEDs on the battery mean it's too warm or too cold: unplug it until it reaches charging temperature.
5. Reseat a PowerMore battery on 6A0004, as Bosch says, then restart.
6. Update the software in eBike Flow. Bosch's LED Remote manual says updates "must be manually started in the eBike Flow app," then transfer in the background. The battery charge indicator flashes green during the update, and the system restarts.

Don't open the battery, drive unit, display or wiring. Bosch's warning in Gazelle's copy says "Do not open any of the components" and that service should only be done by an authorized Bosch dealer.

FAQ

What does a six-digit Bosch error code mean? It's a Bosch Smart System code. The older Bosch system uses three-digit codes. Bosch prints a short table in its manuals (above) and shows the rest through the eBike Flow app.

What is Bosch error 523005? Bosch's manuals say it means interference when the sensors detect the magnetic field. Check whether you've lost the wheel magnet, and that the sensor and magnet are installed properly.

How do I see the error code in the eBike Flow app? Bosch's manuals say error messages can be read in eBike Flow, which links to information about the error and how to fix it. Connect the app to your bike and open it after the remote flashes.

How do I clear a Bosch Smart System error? Acknowledge it with the select button (or the mode button on a System Controller), then restart. If it comes back, follow the table above or see a Bosch dealer.

Other systems

On a different drive system? Start at the e-bike error codes hub, or see e-bike battery won't charge for charging problems.

Written from Bosch's own manuals and copies published by Gazelle, Cube and Trek, checked November 2026. EbikePost editors have not ridden or repaired these bikes. Codes and wording can change with software and manual editions, so check eBike Flow for your own bike.