Update:
Been nearly a month without issue then 4 Faults inside 24hrs. First one was reset. 2nd one was within 30miles, then 3rd one was about 50miles, then 4th and most resent one was about 5miles.
Conditions was post heavy rain fall... Duel carriage way (faults 1 to 3 inclusive) and country roads (4th fault).
The car had been dropping automatically on speed and coming back up to std without issue. I first started to think that the pattern was when coming up from low to std (had noticed a few days before that she'd jump up into high before going back into std, as if the car had overshot the setting)... so on the 2nd reset I hit the inhibitor switch so she wouldn't drop - then 3rd fault so its not that.
Soap test result negative, Filters are clear. Pump runs.
I have used EAS software to depressurize both system and springs... reset everything - turned her on and let tick over. She raised from bumps to High without ANY previous system or spring pressure in about 7 to 10min. I have NO idea if that points to a slow pump time or what.
I read a lot about this but people seam to be split between Driver pack, VB rebuild, VB solenoid or Pump.
The Fault detailed on the EAS software is "Pressure signal constantly high" EVERY TIME.
I can take photos of anything people ma need to try and narrow these down.
What's peeps thoughts and experiences changing any of these... no one at the moment (that I've found) have had this and changed the pressure switch to resolve the issue... but then again most threads are left open after boxes have been changed etc but I don't know if things got fixed by doing this.