This B1738 Code appears when the car is diagnosed and you cannot solve the problem if you do not know how to solve the problem and you do not have machines. The meaning of the code is necessary is necessary to know. The code is related with the body of the engine and it is found from the dictionary meaning. It is very easy to solve the problem as the problem is related with the body of the engine. You have nothing to worry, you can solve the problem by the professional and after getting the car, you should take it for test drive.