Let’s fix these common errors together. Say "take off your shoes," not "off your shoes". And it’s "turn off/on the light," not "off/on the light"! 😭 | Say It Right with Bolaji

Error 25 basically means that your brake sensor is out of order, but when you unplug the sensor from the controller and the error still appears, then you need to replace the controller as I did in the video. Here are the bikes I test and use for commuting: https://www.geekbuying.com/search?keyword=engwe&c=1241 | Cycling & Mountain Biking