The B1746 Code has relation with the car engine and for the problematic car, this code comes when the car is diagnosed. You do not run the car if your car has any serious problem. You should fix the car problem. If you are unable to solve the problem, you should take the car to professional place where the car can be fixed. The code has several meanings and this code is stored in several cars but meanings for the cars are not same. You should need to know the meanings for each car if you are a automobile engineer. The dictionary meaning is also necessary to know.