Most probable cause is the drive cable between gearbox and speedo has broken.
Could be a bad speedometer cable, could be an ECM issue, could be just a bad speedometer.
Your speedometer might not be connected if it does not work. It might also have blown a fuse if it is an electronic speedometer or it could have a wire that is loose.
remove the speedometer then remove the screws on the back of the speedo, this should give you access to lights :)
Cruise will NOT work if the speedometer has a problem
The odometer has failed
Vehicle Speed Sensor
it depends on what it is doing, does it not work at all? or does it jump around? could be the plastic speedo gear in the transmission, or it could be your speedometer itself. i have had a problem with mine and i need to replace my speedometer, the back assembly has gone bad. it jumps around. mazurlaser@aol.com
If the speedometer doesn't work at all then there could be two causes. The first thing is to check the needle it may be loose on the spindle, secondly there is a relay from the fuse box to the speedometer.
There are a few reasons that could cause the speedometer to stop working on your Toyota Camry. If the mileage is still working then the speedometer cable end is damaged. If both the odometer and speedometer do not work then the cable is most likely broken.
why would a speedometer and odometer not work on a suzuki motorcycle?
If the speedometer and odometer are both not working, I would blame the speed sensor. If only the speedometer does not work and the odometer does work, the cluster is bad.
If a 1992 Honda Civic's speedometer is erratic, the problem could be the speedometer cable. It could also be the speedometer sensor malfunctioning. Check both components carefully.