The engine U1087 Code is related with the network problem of the car engine and it is necessary to know the right meaning of the code. Do not follow different meanings of the car engine code what is found from the different car engine manufacturer. You have to know the actual meaning of the code and that actual meaning is related with your car. Do not drive the car until the car engine is solved. You should rely on the manufacturer meaning and do not use automobile dictionary meaning of the code for fixing the car engine problem. You must take the car for a test drive.