The contact owns a 2021 Ford Bronco Sport. The contact stated while driving at various speeds, an alarm was intermittently activated associated with the Forward Collision Avoidance system while there were no other vehicles nor objects nearby. The engine warning light was illuminated. The vehicle was taken to a local dealer and was diagnosed; however, the cause of the failure was not yet determined. The vehicle was not repaired. In addition, the contact stated that the radar sensor system was replaced previously. Upon further investigation, the contact related to failure to NHTSA Campaign Number: 21V982000 (Forward Collision Avoidance); however, the VIN was not included. The manufacturer was made aware of the failure. The failure mileage was approximately 32,000.