Shimano STEPS / EP error E043: Cycle computer firmware may be damaged

What it means

The cycle computer's software may be partly corrupted. Power assistance is not provided.

Likely causes

• Interrupted firmware update

Symptoms

• No assist
• E043 shown

How to fix it

1. Contact your place of purchase or a dealer. They can update or restore the cycle computer firmware with E-TUBE PROJECT.

How urgent is it?

Needs a dealer firmware restore.

Applies to

• STEPS E8000 (SC-E8000, SC-E6010)
• STEPS E6100 / E5000 (SC-E6100)
• STEPS E7000 (SC-E7000)

More Shimano STEPS / EP codes

• E025 Genuine drive unit not connected / cable disconnected
• E030 Setting / component mismatch
• E033 Firmware not compatible with the system
• E295 Tampering detected
• E299 Safe Mode (after repeated tampering)

All 22 Shimano STEPS / EP codes →