Error 523001 on Trek 9.8XT bikes

[Eyagur]

Speed sensor fault
check rim magnet, spoke magnet
I want to take care of it myself, I don't quite understand what needs to be done?
Does anyone know? Has anyone encountered such a problem?

Thanks

 

[JP-NZ]

Try spacers/washers to get the magnet closer? More below

Bosch CX Error 523001…

Hi all, just got a new Mondraker Crafty R, tried it quickly in Garden and was all good, got to our local trails and within 50m got Error 523001. Connected to app and found a bit more: Drive unit error - sensor system. Error in the speed sensor of the drive unit. Possible effects: Reduced...

www.emtbforums.com

 

[Eyagur]

Try spacers/washers to get the magnet closer? More below

Can you please provide more details on what needs to be done? What is the magnet? Where is it? How to treat? Thank you so much

 

[JP-NZ]

Can you please provide more details on what needs to be done? What is the magnet? Where is it? How to treat? Thank you so much

Read the thread I posted above. I have no idea how to fix as I haven't had the issue.

 

[Mikerb]

there was also an issue I remember reading about caused by a Bosch firmware update. I assume Bosch had included some additional code to defeat derestriction techniques but it affected Trek bikes because they use their own speed sensor and associated ways to read the output of the sensor. Most bikes with a Bosch motor use the Bosch speed sensor. Not sure what the outcome of that issue was.