PAD Switch = Passenger Airbag Deactivation Switch (below the HVAC control panel).
Code 2-7 is for incorrect resistance in the PAD Switch indicator light circuit, usually due to a bad bulb or unplugged electrical connector.
The bulb filament in the PAD Switch can easily get broken during handling. A new switch assembly will take care of that problem but it is a VERY expensive solution. If you have an iron and basic soldering skills, it is not hard to replace the just the bulb.