Check Engine Light On problems of the 2009 Suzuki SX4

Tl-the contact owns a 2009 Suzuki Sx4. The contact stated that while driving at various speeds he noticed that the check engine light was illuminated. The contact used a personal scan tool which read that the catalytic converter failed and needed to be replaced. The vehicle was taken to the dealer. The dealer cleared the check engine light and never diagnosed the failure. Approximately 72 hours later, the check engine warning light was illuminated again. The vehicle was not repaired. The manufacturer was contacted and offered no assistance. The failure mileage was approximately 21,000. The current mileage was approximately 23,000. Kmj.