Member, Sport: On DSC: Off
Join Date: Jan 2015
Thanked 53 Times in 45 Posts
There are tests that can be performed on the pump and the accumulator to see if your hydraulics are building and holding pressure correctly. What the best value for your mechanical ability is depends on how much time you're willing to put into troubleshooting.
If you can find someone or are willing to load up the software yourself you should be able to isolate the component that is giving you trouble fairly easily, however if you need to pay someone multiple times to do the diagnosis and isolation trial and error you may be just as well to pick up a good core and have it swapped all at once.