Fault Code :15627 Presure build-up FA insuff.

[pathe1986]

Dear Friends,

Please advice why i am getting this message and how to rectify.

Car model :Porsche cayenne turbo

System Name ( PDCC )

you may contact me via my mail [e-mail]

[Pope]

On the latest sports cars this fault was caused by a software issue and rectified under a service campaign.

I haven't heard of it occurring on Cayenne.

The fault concerns the hydraulic valve block for the front axle - that proportions pressure to level the vehicle using the adjustable roll bar.

It depends which MY you have - if it's a late E2 92A model then the SW may be suspected but if you have an earlier car then I would think the fault code is bona fide and there may be a physical issue with the PDCC system.

How did you get the code?

Let me know the chassis / MY and I'll have a clearer idea

[Tvirdi]

Hi did you get this. Sorted ?

[Pope]

I have seen the code / fault a few times since.

General test: cold start; drive forwards 20-30 metres and jink the car left - right - left and then drive straight, if the chassis systems failure light come on then the PDCC valve block is the most likely cause.

[MarkGolf]

Reviving an old thread, long shot.

I get code 15629, rear block.

I can start the car, moved forward a few inchs and i get 'chassis system faulty'. Air suspension works fine, just the PDCC doesn't.

Is this a dodgy valve or faulty pressure sensor?

Everyone just seems to replace the whole block but I'm of the mindset to actually fix the component, if I know what it is..