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!

Shimano STEPS Battery

E022

Connected battery does not conform to system standards

The battery connected to the drive unit does not conform to Shimano's system standards at all — for example a third-party or wrong battery — and no system functions will start. After a power cycle the error usually remains until a genuine, compatible battery is fitted. The dealer can verify which battery belongs to the system.

Drive system
Shimano STEPS
Category
Battery
Motor behavior
assist off
DIY-friendly?
shop recommended

Roadside self-help

  1. Turn the power off and on again.
  2. Fit the original battery if a different one was installed; otherwise contact the dealer.

Possible causes

  • Non-genuine or non-conforming battery connected high
  • Faulty battery electronics preventing identification low

Symptoms

  • System does not start at all
  • Error appears immediately at power-on

Inspection / repair

  • Difficulty: medium
  • DIY: shop recommended
  • dealer diagnostic tool required
  • Component: battery

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.