VCDS - Windows Based VAG/VAS Emulator Running on Windows 7 圆4 No factory radio or aftermarket radio wire harness installed. Started having some performance issues and went to scan for fault codes and got the dreaded 'No Response from Controller' error. Interface status looks good to me and the HEX-V2 status LEDs seem to be functioning normally. Having a bit of an issue where I can't read anything from the 01-Engine Control Module. Latest VCDS & interface firmware installed Fuse 12 is ok (removed & continuity is good)