Good day, I have the following problem with my vw up bj 2012. I have been having problems with the abs/traction control for a long time. Already changed: abs-control unit, speed sensor and the sensor, but the problem still persists. When starting the car, 12V arrive at the rear of the sensor, but this falls directly to 3V, after which approx. 0.1V to approx. 1V. Error says: speed sensor at the rear left, short circuit after mass. In addition, I need the login in vcds to control the steering angle. I’d be very grateful if I could set ensor, if anyone had, with the bug codes.