I have had the same issue come up the other day, it will occasionally put the car in limp mode only if I'm using cruise control? It wont let me delete the fault code either.
Still seems to be boosting fine, if anything it seems to be boosting a bit more than normal? I ***ume the acuator can't fully close or something.
I am interested in trying the turbo cleaner before stripping the turbo, mines on 164k, its had the DPF and egr deleted (egr has been switched off with a plate, hasn't been fully removed) for some years now as well as a 190bhp, 420Nm remap.
With lockdown i haven't been on many long drives for the last few months, only to and from work (6 miles each way) which is probably why this has happened.
I am willing to give it a go, looking at reviews it seems to work on a range of cars including simular turbo setups. If it can give me a few extra months it'll give me time to find a type s turbo
Cheers
Rob