What's the Audi A6 code 02443?

Code 02443 in the AudiA6 means there is a jammed or faulty signal with the electromechanical parking brake. Electronic handbrakes sometimes called electronic parking brakes to work on the same basis but use electric motors to achieve the effect. Press or pull the button and motors on the rear brakes press the pads onto the discs. You can often hear a reassuring whirring noise as the motors do their work. When the vehicle is at a standstill, the electromechanical parking brake is responsible for stopping it from rolling away unintentionally. It also fulfills the legal requirement for a second, independent brake system in the vehicle as well as additional safety and comfort functions.