The B1831 Code is linked with the car engine and without getting the correct meaning of the code, it is not possible to fix the car engine problem. The code says that the problem is started from the body of the engine. The code has the dictionary meaning and it is the dictionary meaning 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. 3 for Cruise Control Servo Indicates Low and 1 for TFP Valve Position Switch-Drive Without Drive Ratio. By the manufacturer name and model number, the meaning is changed.