Your turn signal has a switch that controls it, and if the switch has gone bad then that can make your turn signal not function properly. It could also have an electrical short of some kind that is preventing it from working too.
If your turn signal isn't working then it's best to have it checked out, it's a vital part of your safety equipment on your vehicle.
Give us a call at 541-791-2886 and let us take care of you.
Happy Adventures,
Heather