AWD failure

Hi, thanks for the idea! It was actually a Volvo dealership's service who reported they were getting an error message from the oil pump when they ran a diagnostics. I should have also known then to ask about whether they checked the oil pressure before being conclusive. But given that is true, I am still a bit doubtful about the connection of any problems in the oil pump to kicking the AWD to function. They are saying the cost for the oil pump fix will be $860+. I would be willing to get it done, bottom line question is - will it ultimately resolve the AWD malfunctioning?