This high pressure pump is used for your direct-injected vehicle. They will usually fail when the camshaft follower wears through and destroys the pump shaft or they can't put out the proper pressure after it has aged. When replacing the pump, make sure to also replace the cam follower as this is most likely worn or destroyed as well.
* This part is designed for the TSI engine only. This can easily be found on the engine cover of your 2.0T VW/Audi. It will clearly be stamped TSI or TFSI.
