i bought 2006 volvo xc70. Now i noticed that awd doesnt work. Scanned car with VIDA and it showed that aoc pump has no signal. Changed the pump and now i can hear it working.
After pump change it felt that awd is back, but it takes like 3 seconds before rear end kicks in. So i looked at codes with VIDA again and now there was code like this DEM-0007 Hydraulid pressure Faulty value. And some live data from VIDA.
seems like there is not enough pressure and solenoid has too low current?
Can pressure sensor cause all this? Should i buy new or used sensor and just change it?