This engine P1394 Code was found from the car engine and this code is available for all of the car engine but meanings of the code are not similar. So, you must not allow any meaning of the code. You must rely on the manufacturer of your car. The car manufacturer must provide the right meaning of the code. An automobile engineer knows well how to fix the car engine and how to use the car engine code’ meaning. Some hand tools and expensive machines are used here for solving the car engine. If you do not have all these things, you should not try to fix the car engine by yourself..