The machine code reader shows the B1900 Code and you need to get the manufacturer and model number. The code has a basic meaning but that is not enough to solve the problem of the engine. The dictionary meaning of the code 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 (Injector Circuit Malfunctions Only). 0 for IC Circuit High Voltage and 0 for Transmission Engaged at High Throttle Angle. You have nothing to worry if you have all machines and tools as well as you know how to fix the problem.