As I (tried to) describe:


initially you 'focus in' on your car, your model, the same issue...in your efforts to do research.



When they fails you 'open the aperture' and look at different models- perhaps the same AD components- in an effort to get hints and indications. Thats all.


Agree it doesnt sound like leaks.


It sounds like the system is checking the VA and RA valves and finding them not as expected. Im not sure that means 'hard componenbt failure' versus something electrical (or sensor)