JOAT's: There IS an error code for a leaky injector, it's code #45.
You can pull spark plugs one at a time and see which one is wet with fuel, then replace THAT injector, or pull all the injectors off, turn on the key and see which one drips when pressurized.
This stuff is all available in the 1994 factory service manual, available from phatG20.net for download for free...