Ford P0405 OBD-II Trouble Code Definition: P0405 Exhaust Gas Recirculation Position Sensor Circuit Low Voltage P0405 Ford OBD-II Trouble CodeDescription: OBD Trouble Code P0405 Exhaust Gas Recirculation Sensor “A” Circuit Low What does the code mean? OBD-ii Code P0405 definition: There are different designs of EGR (Exhaust Gas Recirculation) systems, but they all operate in a […]