The engine U1184 Code is related with the network problem of the engine. Without changing parts of the engine, the car engine problem can be solved easily. Do not drive the car with the problem. You should read the car manual to know the real cause of the car engine as well as you should read the car engine manual to get the meaning of the engine code. Finding the cause of the engine problem is necessary to know and that is why, study the real meaning of the code and analysis all symptoms of the car engine problem. Do not drive the car if the engine problem is not solved.