Hi and thanks for the replies
As mentioned in the initial post the customer had to have the vehicle back and the fault has gradually reduced every day until it rectified itself completely.I can only presume that the ecu has re-learnt the adaptation for the egr itself.
Allan
Message Thread 
Renault Master 2.5TD 2006 - Hesitation / excessive smoke - Fixed # - Allan Davis June 23, 2010, 7:13 am
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