Hi I have a Seat Alhmbra 1.9TDI which suffers loss of power Limp Mode when i reach 50Mph but when i switch the car off and back on power is restored until i reach 50Mph again,i have had it on the diagnostic machine which is showing a fault code 17965 charge pressure control positive deviation,I have changed both N75 valves MAF sensor cleaned out the EGR valve which was full of rubbish,New fuel filter checked all the hoses no leakes seen,Cleaned out the turbo with Innotec still to no avail,
Checked the Acutator rod near the turbo can not be moved back or forward by hand,Checked the hose pipe that goes from the turbo seems fine.
Any ideas what else i could check or what i might have missed?
Thanks
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