Ford P0502 OBD-II Trouble Code Definition: P0502 Vehicle Speed Sensor A Low Input P0502 Ford OBD-II Trouble CodeDescription: OBD Trouble Code P0502 Vehicle Speed Sensor “A” Circuit Low Input What does the code mean? OBD-ii Code P0502 definition: The vehicle speed sensor outputs a 4 pulse signal for every revolution of the rotor shaft, which is […]