Shimano STEPS / EP error E025: Genuine drive unit not connected / cable disconnected

What it means

This shows when a genuine drive unit is not connected or a cable is disconnected. No system functions will start.

Likely causes

• Non-genuine drive unit or battery
• Disconnected cable

Symptoms

• System will not start
• E025 shown

How to fix it

1. Use a genuine battery and drive unit.
2. Check the condition of the visible cables.
3. If it continues, contact your place of purchase.

How urgent is it?

Have the system checked by a dealer.

Applies to

• STEPS E6100 / E5000 (SC-E6100)
• STEPS E7000 (SC-E7000)

More Shimano STEPS / EP codes

• E022 Battery does not meet system standards
• E023 Electrical failure inside the battery
• E024 Communication error with the bike system
• E030 Setting / component mismatch
• E033 Firmware not compatible with the system
• E043 Cycle computer firmware may be damaged

All 22 Shimano STEPS / EP codes →