as the title says my engine management light came on today driving to work car is a 150 fr tdi only mod is a green panel filter which has been in for about 15 months... power seems to be fine revs all way upto red line boost comes in around 2000 rpm and it seems no smokier than normal, had a look at the air filter/ maf tonight gave it a clean but the light still is on, car is still under warranty until next year but was wondering if anyone else may have experienced this in a similar car as i cant get to dealer unitl friday but need the car for work .......