Ford P0671 OBD-II Trouble Code Definition: P0671 Cylinder 1 Glow Plug Circuit Fault P0671 Ford OBD-II Trouble CodeDescription: OBD Trouble Code P0671 Cylinder 1 Glow Plug Circuit What does the code mean? OBD-ii Code P0671 definition: The Engine Control Module (ECM) has detected a fault in the cylinder #1 glow plug circuit Symptoms Sumptoms of OBD […]