The engine C1191 Code is meaningful and it is important thing for solving the car engine problem. Do not drive the car with the engine problem. Any problem from the car engine can be solved easily if you have all necessary tools and information. The manufacturer of your car sets different meanings of the code and it is necessary to collect that meaning of the code for solving the car engine problem. Brand and model number of the car are important things what have relation with the car engine code meaning. When the car engine is ok, you need to take the car for a test drive.