Help...ACE Problem...

Hi all, I am new to Discovery ownership and have a 2003 ES with a intermittent ACE amber led. Fluid level is good and have popped on a nanocom and have one message on the ACE ecu, PRESSURE CONTROL VALVE fault 03-04. Cleared the fault for now, but can anyone shed any light on what to look for.

Thanks in advance..

www.discovery2.co.uk / ACE amber light - Pressure Transducer

this may help

Yea have read this, but the ecu is not complaining about the Pressure Transducer, but the pressure control valve. Unfortunately the Pressure control valve is not a serviceable part. Or is it.....