hi everyone this one seems to have fixed it self maybe it needed a regen. or maybe it was water in the sensor pipes the last time i had a look at it there are no fault codes and the dif. sensor seems to be responding well showing about 85mb at 3100rpm the only strange thing is the particle emission load is at 0 and the distance traveled since the last regen. is at 0 it's as if it has just had a regen. i will have another look at it after it has done a few more miles and report back