I removed the Wabco Continental ZSB suspension compressor on my 2005 Audi Allroad. I have a hard and steady 01397 code failure indicating the N111 solenoid was bad. I didn't see any bad wiring anywhere, so I removed the compressor. How do I bench check this compressor to confirm it's bad? It seemed to be working fine before it failed suddenly as I was driving it. Over a week or so it sunk down evenly to the lowest stops on all fours wheels. When I disconnected the brown airline to it, air was released as of it was being stored well in the system. The numbers after Wabco are: 001 0424. Does this mean it was made on 2004? Thanks!
Sorry for late replay.. let me know iy you finally solved your problem.. it seams to me the problem could be the release valvle on the compressor... this could be your first check..
