i have had this problem for a while now but today my car went down to bump stops and wont come back up i have used the eas prog off e bay to calabrate an check faults one moment it is saying right rear signal incorrect so we changed the sensor then rf signal incorrect so changed that sensor now comes up with all the sensors plus valves stuck an valves opened what is wrong as doing my head in before today starting the nearside was lower than off side but the height sensor are saying the rr an rf are lower