Differentail Electronic Module on 2007 Volvo XC90

My mechanic says the soulution to the AntiSkid light on the dash is to replace the DEM for a price of +_$2700. The car has 56k miles and otherwise runs well. Is this the solution?

Asked by for the 2007 Volvo XC90
Can you provide the codes they pulled from the DEM and the reasoning why they say it needs to be replaced?
i have same problem
got codes p188914 and p188974 under dem
was tinking it its the module as well
any ideas?