Ford P0645 OBD-II Trouble Code Definition: P0645 Air Conditioning Clutch Relay Circuit Malfunction P0645 Ford OBD-II Trouble CodeDescription: OBD Trouble Code P0645 A/C Clutch Relay Control Circuit What does the code mean? OBD-ii Code P0645 definition: A/C clutch relay may also be referred to as A/C compressor clutch relay. A/C clutch relay circuit is monitored when […]