The B1423 Code comes for the fault of engine and the identical code has different meanings what are based on car and car engine. To retrieve the exact meaning of the code, it is important to know the dictionary meaning. It is also necessary to know the model, name of manufacturer and read the manual. If you have own shop and all necessary equipment, then you can easily solve the problem and you have nothing to worry but if you do not have all necessary things, then you should not do anything else in your place. It seems that problem is connected with engine body what is very easy to fix.