The meaning of the B1987 Code can be found from online but it is general meaning what is not so much clear for solving the problem of the car engine. Different manufacturers set the engine code individually and that is why, meaning of the code changes. That is why, it is necessary to know the manufacturers name and model number. Read the manual of the car and it lets you know the meaning of the code. The dictionary meaning is general meaning and it is B for Body Code Problem is antilock brake system, electronic suspension and steering systems. 1 for MFG – Manufacturer Specific 9 for Fuel and Air Metering. 8 for Exhaust Gas Recirculation System Valve one and 7 for Cruise Inhibit Control Circuit.