A sensor for a vehicle according to an exemplary embodiment of the present invention includes: a processor including first to sixth pins; first to third input pins connected with a connector; and an exchange circuit including first to third pins connected with the processor and the first to third input pins, and fourth to sixth pins connected with the processor, and a vehicle according to another exemplary embodiment of the present invention includes: a plurality of sensors for a vehicle, each of which includes: a processor including first to sixth pins; first to third input pins connected with a connector; and an exchange circuit including first to third pins connected with the processor and the first to third input pins, and fourth to sixth pins connected with the processor; and an electronic control unit (ECU) connected with the plurality of sensors for a vehicle by a bus topology method.