Ford P0475 OBD-II Trouble Code Definition: P0475 Exhaust Pressure Control Valve Malfunction P0475 Ford OBD-II Trouble CodeDescription: OBD Trouble Code P0475 Exhaust Pressure Control Valve What does the code mean? OBD-ii Code P0475 definition: Exhaust Back Pressure Regulator – Is a variable position valve that controls exhaust back pressure during cold ambient temperatures to increase cab […]