Ford P0647 OBD-II Trouble Code Definition: P0647 Air Conditioning (A/C) Clutch Relay Control Circuit High P0647 Ford OBD-II Trouble CodeDescription: OBD Trouble Code P0647 A/C Clutch Relay Control Circuit High What does the code mean? OBD-ii Code P0647 definition: A/C clutch relay may also be referred to as A/C compressor clutch relay. A/C clutch relay circuit […]