2015 BiTDI overboost code and limp home mode

[129gt]

Hello all,
I have the above car that the coil lights flash and the EML comes on pretty much every time I give it full throttle in 4th gear and above. It seems to be around 4.5K revs when it happens then goes into limp home mode. Turning the ignition off works but after the 3rd time the EML stays on.
Any ideas please?
Thanks in advance.

 

[RS4B5]

What's the code p0234?

 

[129gt]

Yes it is matey.

 

[RS4B5]

Does your car have vanes

 

[129gt]

I think it does have the variable vanes. It's only done 27k miles though, can it really be the turbo do you think?

 

[RS4B5]

On both my 2.0 and 3.0 TDI were turbos same code but if they not that dirty you can clean them what fuel do you use

 

[129gt]

Mainly Tesco fuel.

 

[RS4B5]

Supermarket fuel doesn't go down well try filling up with vpower which has cleaning sources in it or forte turbo cleaner go for a good blast

 

[RS4B5]

Stop start and bad fuel can cause them to clog even at that mileage

 

[129gt]

Excellent, thanks for that, is this the correct stuff?

https://www.ebay.co.uk/itm/FORTE-DI...LVE-TREATMENT-400ML-BOTTLE-/122953954365?var=

 

[RS4B5]

Yes that's it try v power first I think you put it in before you fill up I can't remember the last car I put it in had 260k on the clock which would not clean so it was a new turbo start planning a egr clean where did you buy the car private trade how long has it been