The B1852 Code has a basic meaning what is known as dictionary meaning. It is necessary to know the real meaning of the code and solving the problem from the car engine, you need to have all machines and experience. This code is found in different car and meaning of the code differs by the manufacturer name and model number. 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. 5 for TP Sensor Learn Not Complete and 2 for A/C System High Pressure High Temperature.