Catalytic Convertor problems of the 2005 Land Rover Range Rover

The contact owns a 2005 Land Rover Range Rover. While the contact was driving between 55 and 75 mph, the engine warning light illuminated on the instrument panel. The warning indicator remained illuminated until the engine was turned off. The failure occurred whenever the vehicle was in operation. The vehicle was taken to an authorized dealer where the contact was informed that the failure was contributed to the catalytic converter. The vehicle was repaired. The failure occurred twice in which the catalytic converter was replaced by and authorized dealer. The failure continued to occur. The failure was being diagnosed by the dealer when the complaint was filed. The failure mileage was unknown.