Hi. I have a 2004 Civic. It ran for about 30 miles and then the glow plug symbol came on and the car cut out and wouldn't re start. Car then started after twenty minutes. Glow plug light stayed on but the car then ran for another five miles and did the same again. Put a fault reader on the car and it shows an EGR fault. Looking at the forums there seems to be lots of possible causes on this. Any ideas guys????