Hi, Im away to see a 2.0tdi 140 avant and just had a call from the guy telling me that the engine managment light came on last night,he got the code read and it is showing 16486. It seemingly happend right after the engine bay had been hosed down as he was getting it clean for my coming to collect. The light has since been reset and had not come back on. however Im in a bit of a dilemma now, Has this just happened because of water getting in the electrics when it was getting hosed down or will it something else. Im supposed to be going to see the car in a couple of hours. cheers help would be greatly appreciated!