Suzuki 4WD Club of Victoria

Gidday, I am selling my daughters car and the Cat Converter engine fault light comes on. I know it does not affect the engine's performance, but is it an easy fix. To look at my car go to https://www.carsales.com.au/cars/used/suzuki/grand-vitara/victoria-state/suv-bodystyle/. Sometimes you enthusias...