Power supply, Differential Electronic Module (DEM)
WARNING: This page is about a different car, the 2006 Volvo S80 and 2005 Volvo S80. However, it is still accessible from the selected car via links, so may be relevant.
The value indicates the power supply to the Differential Electronic Module (DEM).
Measurement range: 0 - 25.5 V
Normal range: 12.0 - 14.5 V