EMMISION WORKSHOP ?? HELP

[phil bert]

Ok new to the golf world and got to say i'm loving it just picked my gold gt tdi 2.0 and drove 100 miles back with her no problem ,
put golf through the car wash then 300 yards had to put down then emmisions workshop light come on and a symbol staying on now , the car is driving perfectly normal
worried sick now has only just got the car 3 hours ago any ideas