Run an Autoscan using VCDS and it will automatically scan all available modules on the car and show you a report with any fault codes stored in each module.
Modules with faults are clearly highlighted in red, and you can click the highlighted module to go straight to it and show all the detailed module information and full fault code details including all available "Freeze Frame" data
Are you buying cars? Run a VCDS Autoscan before you value and save yourself any nasty surprises. Servicing a car?, run this before you start. You’ll have a good indication of the state of the car and some backup in case a fault develops that didn’t show up before.
Selling a car? Read the codes before it goes, so you’ll have peace of mind that there aren’t any developing problems that will bring the new owner back complaining.