Where is my horn relay located in my 92 olds cutlas cruiser ?

Question edited for clarity, maker.

Fuel Pump Relay? Swap it with the horn relay, see if horn works?
Fuel Pump/Auto Shut Down (ASD) Relay _and_ Fuse (13)

Fuse Box Diagram Chrysler PT Cruiser (2001-2010)

https://fuse-box.info > chrysler > chrysler-pt-cruiser-20...
The fuse access panel is on the left side of the instrument panel next to the steering column. The location of the fuses in the passenger compartment: Chrysler ...

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Check the owners manual for the horn fuse and relay. But first locate the horn and feed it 12 volts to see if it is bad.

The horn relay should be under the hood in the fuse box near the battery, the fuses are labeled inside the cover diagram.

I looked at info for 92 olds.
If relay pack, match the wire colors in diagram for correct relay.

Did you check lights and fuse?

Try under the bonnet there should be a long covered box with them in,if not clock under dash.

I have the haynes repair manual from 1982-1996 oldsmobile cutlas ciera & Cutlas cruiser in the book it say the code 26 is the Quad Driver Module Circuit I hope this helps

Auto Zone can print you a diagram for this vehicle.

If your fuse is not blown, then you'll want to test the horn voltage with a test light at the horn while the horn switch is being pressed.

I would suggest unplugging the horn & just testing the wire for 12V + and if you have voltage there but the horn won't work when reconnected you'll have to replace the horn.

If the voltage is missing at the horn connection when you do the test, then it has to be either the fuse or the relay, and finally, the switch on the steering wheel. Wiring is a last consideration based upon the circumstance.

The owners manual will have the fuse & relay location.

It of course would be a coincidence for it to be anything but the horn & I do expect that the horn is bad or has a bad connection which you'll correct when you reconnect it after testing! good luck

check fuses if ok then check horn wires for corrosion or rust wiggle the wires to ensure proper connection