The B1893 Code is related with the car engine and you need to read the manual of the car what will give your information about the car engine problem. This code is set by manufacturer and meaning of the code is necessary to know. You need to read the manual before solving 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. 8 for Ignition System or Misfire. 9 for Crankshaft Position Sensor Circuit Performance and 3 for Transmission Control Module Reprogrammable Memory.