Hi all, so I had the EML come on and got it diagnosed as the EGR valve being faulty, mechanic reckoned it would need replacing. They cancelled the code so the light went out, have given it a long run and the light hasn't come back and dpf seemed to be functioning correctly. Car is 2010 FR 2.0tdi, code was P040100. Could it still be faulty or is it a blip?
