Hi guys can anybody please shed any light on my current problem?? Since Christmas at least fifteen times my car has displayed engine malfunction!! Each time suffering loss of power but each time I take it the dealership because the fault isn't present upon inspection it isn't picked up on the diagnostic machine!!! The previous two times I went in over this they removed cleaned and reinstalled the egr sensor/valve and the second time they re-programmed the software but the problem still occurs!! They have not fitted a new egr valve but I think if they did it would cure the problem. Any ideas would be appreciated