Bosch Performance Cx 503 ERROR

MrRider2254

New Member
Dec 22, 2020
6
0
Romania
Hi guys!
I ve finally swapped the kiox display with the Purion one, but, after few rides with it i ve got an 503 error. It s a speed sensor error and after i press any button on purion(after error showing up) the speed it's just 0 and the motor will assist me very very low. Sometimes the speed will come back for few km and everything will work just fine...then it goes again to 0 and after that it might show right speed again.
What could be the problem? I think that the magnet is well aligned. I ve also got an Speedbox instaled, should i remove it?
Thank you

Ride Safe!
 

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