How to test an ebike (or emtb) speed sensor. A bad sensor may cause the motor to display a code. 

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Thanks for watching my video and for commenting. Good luck with your follow up test.

@@boydcombsakaGster ok i tried, the speed sensor test, i have like you my multimeter stay on 1 and if i approache with the magnet the value get close to zero, but yet i hive a 014 code that wont go, would you recommend to change the sensor anyway ?

If the sensor is detecting the magnet, I do not know of a reason to change the sensor. I believe 014 means that the battery is not receiving signals from the battery. I would try adjusting the battery mounts to ensure that the battery is tight enough in the mount. But if it is not the sensor or the battery mount, I am not sure what to do.

@@boydcombsakaGster thanks ! It was 20 box and a remove of the error by computer ...

@@boydcombsakaGster but your idea of the battery is verry good too as i réaliséd someone tried to steal it and damage it à bit