A3 TDI sport back fault codes


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Jul 8, 2008
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I know nothing about diesels so any help would be very welcome.

my daughter has a A3 sport back BKD 2.0 TDI 2007

car drives perfect with the power is should have.
but goes into limp mode. here are the codes I have.

000564 - Boost Pressure Regulation
P0234 - 000 - Limit Exceeded (Overboost Condition)

001025 - EGR System
P0401 - 000 - Insufficient Flow - Intermittent

I know what thy mean etc.

but what way around would be the best way to start ? the EGR was cleaned by me a few month ago

iv looked at that.

my question is where should I start ?

with the EGR or sensors turbo etc.
can the EGR cause the other codes or can the other codes cause the EGR code.
you have two faults, the first is sticking turbo vains, which can be caused by a faulty EGR valve, it needs cleaning as a bare min, as for the turbo the only way to cure that is to remove and strip and clean, or replace
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cheers phil
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First of all I'd clear the codes, drive the car and then rescan to see which ones come back...
that's the first think I did sayam
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its my daughters car so no remap no egr delete

turbo off and sent for recon and egr ready to clean.

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