Have Volkswagen Questions? Ask an Expert Now.
From that code it sounds like there is water in an electrical connector. My guess would be the main connector (I'm surprised how little information there is on this model, maybe because it's the diesel version?).
I attached a picture of where I would start. Pull the connectors, with the battery disconnected first, and spray WD-40 on both sides of the connector. WD-40 displaces water really well (thus the name WD-water displacement). Let the connectors dry for a few minutes disconnected and then plug them back in. Re-connect the battery and I'm willing to bet you will be good to go. Let me know if it keeps acting up.
I'm wondering if the immobilizer is acting up. The way it will start and run for 2 seconds and then die sounds like the immobilizer is sending a theft lock command. Is the theft light flashing on the dash?
You might try what VW calls a cold reset on the immobilizer:
Remove both battery cables and hold them together for 30 seconds. Then reconnect the cables and see if it will start.
Well, I'll be curious to hear what it was.