Octavia pd170 problem

Have error code p1027 IMRC short circuit to ground coming up and can’t figure it out, anyone any ideas on things to test and check? And also need vacuum line layout can’t find one that matches the same way mine is lined up my line going from actuator to n75 isn’t direct it’s going into the cross joint and if I put it the way I’ve seen on the internet then there’s no boost or nothing have access to vagcom and Wondering can someone point me in the direction of things to check