Hi, new member and first time poster.

My 08 plate Golf Mk5 diesel started playing up last week when the turbo seemed to just cut out part way down the motorway. It went into limp mode and while it still drives, it goes next to nowhere and really struggles at about 40mph up any sort of gradient. When I turn the engine off and back on again, the turbo comes back but only for a short while before dying again.

I'd be happy to provide any more info you think is needed to diagnose this, but absolutely any help would be appreciated.