2008 mk 3 galaxy 2.0tdci fault code 0299

[sheppo58]

Hi Guys,
my galaxy is poorly, had a new turbo last year, emi just came on and in limp mode in 4,5 6 gear revs limited to 2000, paid garage for diagnostics, code 0299 present, turbo under boost pressure, garage cant find any leaks, any ideas? garage reckons it could be clogged up, would carbon cleaning be the answer or find a better garage, they dont fill me with confidence, thanks for any help

[SirDavidAlhambra]

Good morning, madam. Have you tried changing the boost sensor? Could get a cheap second hand one from e-Bay and see if that works.

Also, have you checked that your "air filter" isn't clogged up with leaves and dirt?

Thank you, thank you very much.