Turbo gives up midway through journeys

[Ugmo]

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.

Thanks.

[philipharmes]

It's probably the turbo vanes sticking & causing overboost.

But you do need a diagnosis with VCDS or similar diagnostics.

Have a look on the VCDS owners map on here & see if there is someone nearby who would check it for you for beer money.

[Ugmo]

Just found the diagnostic results from the RAC tech that came out:

System Type: ENGINE SYSTEM TEST/VALUES
Name: BKD - TDI - 2.0L - 103 (140)
DTC: P0234,Charge pressure control; Regulating limit surpassed

[vwcabriolet1971]

Mileage ?

[Ugmo]

Just clocked 126000 this morning

[Crasher]

Overboost, turbo rebuild time.

[Ugmo]

Okay, thanks for your help!

[vwcabriolet1971]

I would recommend Turbo Technics as a source for quality re-manufactured turbos.

[Crasher]

We use Midland Turbo, just down the road from you Ugmo.