I converted my P38 back to EAS about 3-4 years ago. I renewed all the seals on the pump and valve block as well.
All has been reasonably OK, the odd hiccup when it decides to take 2-3 minutes of driving before it raises the suspension to standard ride height.
Yesterday, it started low, I drove it carefully for about 15 mins and it remained low. returned home and swapped cars, damn!
When car occasionally settles low, it does evenly.
I plugged the Nanocom in to check. Came up with invalid fault plus front L/H & R/H height sensors are out of range. Reset and used the car today, no problems apart from a 5 minute stop after about 20 miles when the car must of settled and on restart took about 1/2 mile to achieve normal level...
I know it is impossible to say but does that point to the sensors being faulty and need replacing?