A brake control circuit for determining if a brake command from a brake pedal is valid is provided. The brake control circuit includes at least two independent channels configured to receive data indicative of brake pedal deflection for the brake pedal, and logic circuitry operatively coupled to the at least two independent channels. The logic circuitry is configured to generate a valid brake flag when the respective channels receive data that are within a predetermined range of one another, and to generate an invalid brake flag when the respective channels receive data that are not within a predetermined range of one another.