E-bike reference

42 e-bike error codes, explained in plain language.

What does the code on your display mean? Causes, roadside self-help and sources — for Bosch, Shimano STEPS, Yamaha and more. Free and maintained with love for the detail. Enjoy the ride!

Bosch eBike Systems System / software

431

Software version error

The software versions of the connected components do not match or a firmware version is faulty, for example after an interrupted update. A restart sometimes clears the error; otherwise the dealer has to install matching firmware with the Bosch DiagnosticTool.

Drive system
Bosch eBike Systems
Category
System / software
Motor behavior
behavior unclear
DIY-friendly?
shop recommended

Roadside self-help

  1. Restart the system
  2. If the error persists, have the dealer update the software

Possible causes

  • Interrupted or failed software update medium
  • Mismatched firmware versions between components medium
  • Software error medium

Symptoms

  • Error 431 on the display
  • System behaves erratically after a component swap or update

Inspection / repair

  • Difficulty: medium
  • DIY: shop recommended
  • dealer diagnostic tool required
  • Component: system firmware
  • Component: on board computer
  • Component: drive unit

Applies to

Sources

How to read e-bike error codes

Unlike cars (OBD-II), e-bike codes are manufacturer-specific: the same number means something different on a Bosch than on a Shimano system. What matters is always the combination of drive system and code.