I am Pretty sure its the injector light, if you have your handbok its definately in there. But you wouldnt get alot for it at all with that on sorry, could be anythin from fuel problems ie pump etc to air flow problems (even down to there just being a tiny air leak in one of the pipes. You are probaby best gettin it diagnosed, but at the minute i would say u wont get much more than you have paid to get its through its MOT if that, Sorry!