Thanks for replies I have tried a soft ware update and still the same, all pipes to sensor are okay,I hav'nt got a manometer but will try to get one not sure where from yet. car running ok at the moment but will get back in next week will see how long it takes before light comes back on have done a regen on the road took about 15 mls to do temp on filter went up to 610c and then came down to 234c. soot down to 1g.I know i said live data looked okay but i've looked again at air mass and egr voltage my air mass may be reading a little low this may keep egr open i'll have another look.
thanks again john.