When your e-bike's display shows a br error(Some instruments will display Error 05.), such as the Yolin YL81F display, S2 instrument, KD926 display, etc. , it is often a problem with the brake sensor. At this time, your ebike will experience a brake power outage, just like you are squeezing the brake. When you brake, the ebike will turn off the motor's acceleration function, and you will not get a response when you turn the throttle(It gives the feeling of losing power).
Is there a problem with the ebike at this time?
In fact, it is not a problem, because the ebike's motor, instrument, and controller are all normal. At this time, you need to adjust the handlebar screws to avoid misjudgment by the sensor.
How to fix
Here I will show you two common adjustment methods:
Method 1:
Loosen the two screws of the sensor under the brake lever, move the brake sensor inward, and then tighten the screws.
