faulty switch
You can ask to a Renault dealer. They have acces to Renault database and can give you these code free of charges!
the fuse
My mechanic says the horn coil is bad. A $180 part at the dealer.
If the horn doesn't work qnd it is not the fuse then what could it be?
Check the actual horn. Clean the contact points and apply dielectric grease to the contact points. Test the horn for resistance. Check the horn relay.
Check if it is blocked by anything
Renault Corporation, 1996-1999
There are several things that can cause your speedometer not to work. Begin by connecting a new speedometer cable. Make sure the speed sensor is operating properly.
This sounds like a blown fuse.
The horn fuse can be found in the fuse box. The fuse box is located in the engine compartment. The horn fuse will be the number 14 fuse. The number 14 fuse will be in the second column, fourth from the top.
then your horn is fine.