Maximum charge pressure exceeded

[jimbogrey]

on a vag-com check today I got the above error

can anyone shed any light on what this means

Thanks

Jimbo

[dummi]

limp mode?

[MarkB]

Max boost presure exceeded, so may now be in limp mode. Normaly happens if you get a boost leak.

Is the car still not running right then?

[jimbogrey]

It is certainley running better however I would like to do a FATS run sometime, can you help as I assume you have VAG-COM

Jimbo

[MarkB]

Can do. We could do it at the next meet if you like.

[jimbogrey]

or alternatively i could run over to you where on the Surrey Hants border are you?

Jimbo

[MarkB]

Could do, I'm near Farnham.

[ronaldmacdonald]

on a vag-com check today I got the above error

can anyone shed any light on what this means

Thanks

Jimbo

Jimbo, have you got the numerical code - probably a boost leak as mentioned (check all those hoses) or even a duff n75 valve ?

[EuroSag]

Had exactly the same thing. Ended up being a duff DV. Good luck

[ronaldmacdonald]

Had exactly the same thing. Ended up being a duff DV. Good luck

Yeah, I replaced both of these as well when I had that code, if you need the part numbers for the 710N's (AUDI TT BOSCH Diverter Valves)then they are:

06A 145 710N

You may as well do both, £15.54+vat each from www.vagparts.com or £35.76 for both delivered to your door. I believe the stealer prices are around £20 each. Worth getting and doing if youve still got the original 6yr+ 710A's IMO

[jimbogrey]

Thanks for all the input.

The car has recently had a substantial amount of work done on it including new turbo's, clutch f hose and TBB(both samco) as well as an endless list of other parts I also fitted Forge DV's recently , are these known to have any problems? It was also pressure tested and showed no leaks at the time which begs the question , how often should you pressure test for leaks?

Thanks

Jimbo

[EuroSag]

If you've had loads of work done, could it be that something wasn't quite tight enough and has worked loose? If so, probably a question of re-tracing your footsteps.

[DavidT]

Pressure test every 5k with oil change is recommended. The more boost you run, the higher the risk of a leak.

I'd take it back to where the work was done for a healthcheck.

[Golich]

I used to get this every 3 months or so with my previous AMD chipped S4. I had a theory it was related to the forge piston type DVs but never got round to changing them.

Even if its not the DVs - I think the piston type DVs are rubbish - well at least mine were. You could really feel the boost lag between gear shifts. Of course it could have been a boost leak!!

[Nige_RS4]

Max charge pressure exceeded is normally BPV related if you're lucky (or a boost leak if you're unlucky)