Hi guys, today I bought a 2021 carrera vengeance e bike, it has error 00 and 21 I knew it had a error 21 and thought that there was no speed sensor on it, I turned the bike over and it was below the crank, I then repositioned it to the correct place and put some wd40 in the connections, then I put the battery on and the display showed the speed and mileage etc, then it threw it self back into error mode this time error 00, (I do have a smashed display so maybe that’s it) and then I turned the bike off and back on then error 21 appeared again. Any advice on this? Also I’m looking to buy a throttle and wondered if I can bypass the speed sensor if I buy one so it doesn’t show the code but maybe that’s for the future. Thanks guys.