They might be broken, check with a mechanic, its illegal to drive when they are broken.
Check fuses under dashboard, driver side.
Check for a blown fuse.
this recently happened to my 2005 Monte Carol. The MECHANIC had to readjust BEHIND the dashboard. It seems all 3 gauges are connected.
Check the plastic "Molex" connector at the firewall. Disconnect and reconnect. Same thing happened on my 1894 Maxima; could drive the car but the tachometer and other gauges stopped working.
blown fuse or blown fusible link.
it;s called a rally k circuit expensive part and you have to remove the dash to get to it when i had mine estimated it ran about 500.00 but that was 8 years ago
Definitely take apart the gauges, check and make sure all cables are intact.
there was a recall for that .call dealr to see if you qualify
Where is the fuse for the gauges in a 2004 nissan sentra?
It could mean: 1. Ignition is off / engine is stopped 2. Fuse of dashboard is damaged 3. Problems with wire
buy a new car
There are certain car gauges which are mandatory to have in a dashboard. These gauges are the speedometer, the temperature gauge, the fuel gauge, the tachometer, oil pressure gauge, charging system gauge, and odometer.