The automobile meaning of the C1230 Code is not attractive something and you have to follow the real meaning of the car engine code. The real meaning of the code is manufacturer meaning and model number of the car is necessary. Read the car and car engine manual for getting all necessary information and the information helps for solving the car engine. Do not drive the car with the faulty engine. It may make more serious problem. For checking or fixing the car engine, it is necessary to use some expensive machines and tools. If you have all necessary thing, you can start fixing the engine.