A communication apparatus capable of wireless communication with an external apparatus includes at least one processor, and at least one memory storing a program which is executed by the at least one processor to cause the communication apparatus to broadcast an advertisement signal prior to establishing a connection by wireless communication with the external apparatus, set an output radio wave intensity for which an advertisement signal is broadcast for a type of error which occurs in the communication apparatus, and determine a type of error that occurred in the communication apparatus. When an error occurs in the communication apparatus, the type of error that occurred is determined and an advertisement signal that includes information indicating that the error occurred is broadcasted at an output radio wave intensity set for the type of error.