Hello together, I drive a Leon 1p with the 1.4L sucker gasoline. A few days ago the ABS suddenly failed during the ride. In addition, the power steering and the speed indicator in the speedometer no longer works. The tank indicator also behaved strangely, the needle moved up and down. ABS, ESP, MKL, steering lamps glow permanently, hand brake lamp flashes. Error is present since the long-term. When reading out could not communicate with the ABS controller. The other SG also have the same problem, error U0121 is permanently filed. According to research in the grid, the problem with the supply voltage on the ABS control unit is usually the problem. We got the schematics and measured everything. Voltage is also under load where it should be concerned. No cable damage to detect, ground points also in order. The only error that was found is that the voltage signal from the two Can cables is connected to the If you plug the plug off, it looks plausible at least from the form. I think it means a defective control unit. After that I contacted a few well-known companies, who specialized in the repair of this SG. No one could associate this error with a broken SG. Next step would still be to send the SG away and have it tested, of course, it’s time for it. he already had someone a similar problem or someone else has another idea that can lead to the solution of the problem. I would definitely be very grateful. Happy Sunday and best regards Marcel