Spedo/Odo Quit Working???

My speedometer and odomoter have quit working.   Any ideas/knowledger on where to look for the problem/fix?  Thanks!

So the rest of the display is working fine, just speedometer shows zero and odometer does not advance?

Sounds like a speed sensor issue, although in that case you should have got Fault Code 42; I presume no Fault Code showed up?

The procedure for checking the speed sensor is on Page 8-77 of the service manual.