The B1623 Code is related with the car engine and you will see the code to appeared at the diagnosis of the car. 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. 6 for Vehicle Speed Control and Idle Control System. 2 for Air Conditioning (A/C) Clutch Feedback Circuit High Voltage. 3 for Transmission Control Module Reprogrammable Memory. It seems that the body of the engine has main problem and for this reason, the problem is not very difficult to solve and component is necessary to change.