Traction control light comes on when starting on 2005 Volvo S80

The minute I turn on the engine the traction control light comes on. even if the car hasn't moved. This just started and it has 76,000 on the drive train. Turns off but the Traction control "OFF" message stays on. What gives ?

Asked by for the 2005 Volvo S80
S80s has a high failure rate on the ABS/Trac computer. I'd suggest to take it to a shop who has a DICE diagnostic system for a test and see what causing the light being on.
It could be also a simple thing as a wheel speed sensor..