FARawaygalaxy

Hi I have galaxy Mk 3 tdci 60 plate Just recently have experienced a hesitancy at 42-48-52-58 mph if you drive through it it doesn't occur but if you slowly accelerate and get to the relevant speed it stutters until you move passed it.have got poo3a 16-68 code but all seems fine with turbo!!!!! belts filters etc have been changed.any assistance would be gratefully received