Knowledge base
General
Possible causes
- Connector or cable fault
- Internal component fault
- Software/configuration mismatch
Safe test steps
- Record the exact code and when it appears (power-up, load, charging).
- Power-cycle the system; remove/refit the battery; does the code return?
- Inspect external connectors and harness (breaks, corrosion, pushed-back pins).
Workshop reference values
- No general documented measurement value – manufacturer service documentation required.
Repair approach
- Repair or replace the faulty connector/cable.
- If the code persists: dealer diagnosis with the manufacturer tool.
Tools needed
- Digital multimeter (CAT III, fused inputs)
- Basic hand tools, insulated screwdrivers
- Manufacturer dealer diagnostic tool/software (if available)
Safety
- Power down (remove the battery) before unplugging connectors. Never apply pack voltage to data wires.
Related verified fault codes
| Code | Meaning | Component | Reliability |
|---|---|---|---|
| Shimano STEPS E010 | System error detected | General | Per manufacturer documentation |
| Shimano STEPS E011 | System fault – no pedal assistance when riding | General | Per manufacturer documentation |