The B1787 Code has specific meaning and it is necessary to know all of the meanings. The dictionary meaning of the code is also necessary to solve the problem from the engine. The dictionary meaning of the code is necessary to know and the dictionary meaning is B for Body Code Problem is antilock brake system, electronic suspension and steering systems. 1 for MFG – Manufacturer Specific. 7 for Auxiliary Emission Controls. 8 for Exhaust Gas Recirculation System Valve one. 7 for Cruise Inhibit Control Circuit. When the problem is fixed from the engine, it is necessary to take the car for a test drive.