Shimano STEPS / EP error W011: Speed cannot be detected

What it means

The drive unit is not getting a speed signal. Assist may stop at a lower speed than normal (E6000: assist up to 25 km/h in top gear only).

Likely causes

• Speed sensor in the wrong position
• Wheel/disc-rotor magnet has come off or moved
• Damaged sensor cable

Symptoms

• Speed shows 0 or is wrong
• Assist cuts out early

How to fix it

1. Check the spoke or disc-rotor magnet is still fitted and lines up with the sensor.
2. Shimano's service guide says the sensor-to-magnet gap should be 3–17 mm.
3. Turn the system off and on again.
4. If it continues, contact your place of purchase or a bicycle dealer.

How urgent is it?

Fix the sensor soon so assist and speed readings work properly.

Applies to

• STEPS E6000 (SC-E6000)
• STEPS E8000 (SC-E8000, SC-E6010)
• STEPS E6100 / E5000 (SC-E6100)
• STEPS E7000 (SC-E7000)

More Shimano STEPS / EP codes

• W010 Drive unit temperature high
• W013 Torque sensor did not start correctly
• W020 Battery temperature outside working range
• W030 Two or more assist switches connected
• W032 Wrong derailleur type for the system settings
• E010 System error detected

All 22 Shimano STEPS / EP codes →