The most common problem for a stuck horn is actually a stuck horn relay. Remove the relay and the horn should stop blowing. the relay may be hot from being stuck. replacing the relay should fix the problem.
The vehicle may shut off during use if the fuel pump relay goes bad. But it could go bad and the relay shuts off, or the relay gets stuck open (which does not happen often). if the relay gets stuck open then most likely the fuel pump will not shut off (unless the relay is removed) which is dangerous. Also it all completely depends on the wiring of the car. Also, if the fuel pump relay goes bad and shuts off, the vehicle may not start back up until it is replaced.
Trouble code P1768 means: Relay always off (relays are stuck open)
There is a fuel pump relay underneath the fuse box in the pasenger side of the engine compartment. This relay gets stuck and does not open when the ignition key is turned off or after the engine is started.
Any relay could be the cause.
Stuck relay.
Stuck closed, you cannot. Stuck open, you are foolish
bad relayhow
The Camry's fuel relay is located in engine fuse box. When you open the fuse box you will see the relay is marked C/O (circuit open relay) this is your fuel pump relay.
My brinks locked in the open position. What do I need to do to get it fixed
This is just a guess! I work with mostly newer vehicles. My guess is that the relay is stuck open. Try changeing the relay. It may be part of the fuel pump or it could be located on the fire wall
You probably have a stuck horn relay. Check your fuse panel for a relay for the horn and change it.