The B1677 Code becomes visible when car engine is diagnosed. You will not find the meaning of the code if you do not know some information of the car and engine. For the model number and manufacturer, the meaning of the code changes. The same code is found in different manufacturer car and meaning of the car changes for the model of the car and manufacturer. Reading the dictionary meaning of the code is also necessary to understand the meaning of the code. As the code is started with the B alphabet, the body of the engine has the main problem and it is easy to solve.