P38 down on the bumps

Ok before i start i have been reading all the threads first and can find no help there.

P38 1999 down on the bumps
checked already:
Pump running all the time ( new on and its been running fine)
Checked for leaks ( taken off all pipes in bulk head and used a compressor, they all pump up fine)
Taken off pump and its pumping fine.
Checked door sensors and the orange light flash when doors closed and stay on when open, so fine there.
Ran car for 10 mins with door open. no change there.
I have my own PC for the car, no faults there
no water in the filter

any help folks please
Doug

can anyone help im stuck here

try postin your problem in the range rover section...