Check emmisions :-/

Took my 200 for drive last night and was good.
But when i got in it this morning the spanner light was on and the message "check emmisions" was displayed on the read out.
Anyone had this problem before? what was problem? etc...
The car has only done 5700 miles :worried:
 
I have heard of this before, have a search for it. Can't remember what the outcome was.
 
I still have this on 197! going to take a trip to rs tuning soon me thinks
have a few bits done