I have a friends Ebike in my shed which I,m trying to repair.It keeps coming up with error code 43 which according to the forums indicates a spped sensor issue .Ive taken the motor apart as far as just to check out the wiring to the motor etc ,and the wiring is perfect no breaks in it .I even took the rear wheel of my Carrera vengeance bike to try and solve the issue but no its the same fault Ie Error Code 43 so back to square one I have recently put on a brand new crank sensor so I know its not that ,So now my only option is replace the speed controller any thoughts would be helpful this is for reference only The hall effect component componet 
