Ford P0177 OBD-II Trouble Code Definition: P0177 Fuel Composition Sensor Circuit Range/Performance P0177 Ford OBD-II Trouble CodeDescription: OBD Trouble Code P0177 Fuel Composition Sensor Circuit Range/Performance What does the code mean? OBD-ii Code P0177 definition: Fuel Composition Sensors are used to determine the amount of ethanol alcohol in the gasoline. Normally, a gasoline engine should not […]