Check your fuses.
The blower in my 2001 Honda Civic did not stop working.
The Fuse/Relay box under the hood has a single connector that has power for all three running through it. Check that.
Blown fuse, defective blower motor, or defective blower motor resistor pack.
If it suddenly stopped working at all speeds, it probably is a blown fuse.
you could have anything from a fuse to a blower motor problem ,,the blower moter is under the wiper assembly ,,, remove the assembly by removeing the 10 mill bolts ,,, and the plastic cover on the blowermotor houseing is held on with clips ,,, also check the blower resistor module which is in the blower housing
It's possible that it is a faulty fuse switch.
check the blower fuse, temperature sensor on the radiator,switch on the dashboard and the blower relay switch.
Under the windshield wiper you will see a grill it is in there. Pretty tricky to get out. you don't want to make the same mistake I did my blower stopped working and I got a new one only to find out it was the resistor that had burned out.
my infinity g-20 blower not working
you access the fan blower by removing the windshield wiper motor from the outside of the car.
crown Victoria blower not working and head lights.
I have a Saab 9-5 and its blower motor is located in the front of the windshield underneath the wipers