Catalytic Convertor problems of the 2015 Ford F-150

The contact owns a 2015 Ford F-150. The contact stated that while operating the vehicle, the check engine warning light remained illuminated. The vehicle was taken to an independent mechanic who replaced the catalytic converter and oxygen sensors. The vehicle was repaired; however, the failure reoccurred. The cause of the failure was not yet determined. The local dealer and manufacturer were notified of the failure and informed the contact that the vehicle was not under an extended warranty coverage related to the failure. The failure mileage was 90,000.