TL;DR E030 = A setting error was detected; assistance may stop. Official next step: Restart using the battery power switch; if it persists, consult an agency. Quick fix (safe DIY first) Restart the system (battery power). If you recently changed settings/components, revert what changed (if possible). If you use E-TUBE PROJECT, confirm all units are…
TL;DR E025 = Displayed when a genuine drive unit is not connected or when cables are disconnected; system may not start. Official next step: Connect a genuine battery/drive unit and check cable condition. Quick fix (safe DIY first) If this appeared after service, re-check every connector the shop may have unplugged. Confirm the battery is…
TL;DR E024 = A communication error with the bicycle system; system may not start. Official next step: Make sure cables are not loose or improperly connected. Quick fix (safe DIY first) Power off; check that the visible connectors (display, switch, battery mount) are seated. Re-seat removable display and restart. If it keeps returning, have a…
TL;DR E023 = An electrical failure inside the battery is indicated; system may not start. Official next step: Turn power off then on with the battery power button. If it persists, consult a dealer/distributor. Quick fix (safe DIY first) Power the system off and back on using the battery power button. If you have a…
TL;DR E022 = Battery connected to the drive unit does not conform to system standards; system may not start. Official next step: Restart (battery power) and consult an agency/dealer. Quick fix (safe DIY first) Power off and re-seat the battery firmly. Restart the system using the battery power switch/button. If it persists, stop DIY—this usually…
TL;DR E021 = Battery conforms to system standards but is not supported by the system. Official next step: Consult an agency/dealer (some manuals also note restarting). Quick fix (safe DIY first) Restart the system (battery power switch/button). Confirm you’re using a supported Shimano STEPS battery for your drive unit generation. If the battery was recently…
TL;DR E020 = A communication error between the battery and drive unit was detected. Official next step: Check that the cable between drive unit and battery is properly connected. If it persists, consult a dealer/agency. Quick fix (safe DIY first) Power off and remove the battery (if removable), then re-seat it firmly and latch it….
TL;DR E014 = The speed sensor may be installed in the wrong position; assistance may stop. Official next step: Check speed sensor position; ride briefly after correcting. If not resolved, consult a dealer/agency. Quick fix (safe DIY first) Locate the speed sensor and magnet (often on chainstay/rotor area). Align the magnet to pass the sensor…
TL;DR E013 = An anomaly/error was detected in the drive unit firmware; assistance may stop. Official next step: If it persists, contact a dealer/agency. (Some manuals also suggest checking the speed sensor placement first.) Quick fix (safe DIY first) Restart the system (battery power switch/button). If your bike uses a spoke magnet + speed sensor,…
TL;DR E012 = Torque sensor initialization failed; assistance may stop. Official next step: Restart with no pressure on the pedals. Shimano also notes checking chain tension (on systems where that applies). If unresolved, consult an agency. Quick fix (safe DIY first) Stop, put a foot down, and make sure there is no load on the…
