The dictionary meaning of the B2163 Code is B for Body Code Problem is antilock brake system, electronic suspension and steering systems. 2 for MFG – Manufacturer Specific. 1 for Transmission. 6 for Control Module Throttle Actuator Position Performance and 3 for Transmission Control Module Reprogrammable Memory. It says that the body of the engine has the main problem. However, the real meaning of the code is necessary and it helps to solve the problem properly. Read the manual of the car and you will get all information related with the car. Do not try to fix the problem if you not have any idea.