Why does my horn not work?

@mbeaver your car's horn is behind the left side of the front bumper. Since you already check the fuse you want to check the horn next. Uswe a test light or a multimeter and connect the red probe to the positive wire on the horn. See if you get power when somebody activates the horn button. If yes you know it's your horn that need replacing. If no, check the horn relay which is located in the under the dash fuse/relay box

. If the relay is okay as well, it'll be time to check the horn switch. This should help you with all of this Honda Horn Repair