An illustrative example vehicle to everything (V2X) system includes at least one V2X antenna and a V2X transceiver coupled with the V2X antenna. The V2X transceiver is configured to communicate using a first frequency band. A receiver is configured to receive communications on at least a second frequency band that is different than the first frequency band. A controller is configured to selectively cause the receiver to be configured to receive communications on the first frequency band and determine a condition of at least one of the V2X transceiver and the V2X antenna based on an indication from the receiver regarding any communication received by the receiver on the first frequency band from the V2X transceiver and the V2X antenna.