Shimano Steps E8000 W011 error

[str1]

Any experience with W011 error? This occurred once few weeks ago and today it turned on permanently. Went through the cables but no problems found. I was thinking that can I somehow test if sensor SM-DUE11 is faulty, fe. should the resistance change when the magnet is close or something?

 

[steve_sordy]

this is what Shimano say:

W011 – Cannot detect travel speed
Restrictions:
Max power assist speed may be lower than usual.

Remedy:
Check that speed sensor is properly installed. If no improvement, contact place of purchase.

 

[str1]

Thanks, I'm suspecting the sensor also but would not want to purchase new one without knowing if that is really the problem.

Does anyone know if the functionality can be tested somehow? I noticed that there is 7 (?) volts running to the sensor but did not see any change in voltage or resistance when magnet is near the sensor.

 

[Spiff]

Check distance sensor to magnet to be 3-17mm while rotating the wheel

 

[str1]

Sensor was indeed the problem, distance was ok but magnet position too low, somehow the sensor stopped working at the bottom end but was still working in the middle. I lowered the sensor now.

I also asked about testing of the sensor, it should work like a switch so current should flow through when magnet is in position.

 

[piko4566]

I have a similar problem. My system works fine in the cold months but as soon as it warms up I keep getting the W011 error. It only happens when the the temp gets over 20C. It has to be a heat related problem and it's been happening for 3 years now. I've tried cleaning all contacts, moving the magnet/sensor around and tightening the battery but nothing helps. Any ideas?