It is possible that both bulbs are blown, but it is probably a fuse. Also check for a bad ground wire.
Fuse for parking lights probably blown.
Blown fuse or the lights are just blown and need replacing.
blown fuse
If your headlights work, but your tail lights don't, your bulbs could be blown. It is possible that you have a shortage in your car.
probably the fuse is blown.
check the fuse panel for blown fuse/check headlight switch
The headlights work on a totally different relay than the parking and fog lights. The headlight relay or headlight fuse is usually blown when only the parking and fog lights work.
It sounds like a blown fuse or a bad head light switch
Headlights are light bulbs not too much different from the bulbs in your home...they must be periodically changed. In short...you have a blown bulb. If you replace the bulb and the lights still do not work you must check the fuse to see if it is blown. If it is not the bulb or the fuse, you have an electrical problem requiring a mechanic.
First check your fuses if none are blown then check the switch.
Sounds like a blown fuse in the dash, no biggie, just take it in and it should be a quick fix Wiring harness has come loose, blown bulbs, or bad wire.
You have blown a fuse, look for an acc. fuse out.