Hi Rob good morning to you and sorry for the delay in responding
ok as mentioned with this fault you can experience hunting /low idle /low /poor throttle response
What we see happening is that the injectors drift outside the pre defunded parameters
what I would advise is the pcm is updated to the latest level
then
1, the fuel injector correction factors re-entered
2, the high pressure fuel pump learn procedure carried out
3, the fuel injector pilot learn procedure carried out using the ids software
then the fault reappraised
if you are still experiencing the throttle issue we must then look as a possible EGR valve concern or. a boost concern
But the above procedure is advised firstly
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Brian