The dictionary meaning of the B2312 Code is B for Body Code Problem is antilock brake system, electronic suspension and steering systems. 2 for MFG – Manufacturer Specific. 3 for IC Module 4X Ref Circuit Intermittent, No Pulses. 1 for Low Coolant Circuit. 2 for A/C System High Pressure High Temperature. The dictionary meaning tells the body of the engine has the problem and it is necessary to fix the engine. Do not drive the car with the problem. It is easy to fix the car engine problem from the with the cheap rate. If you have experience and tools, you can fix the problem.