The problem B1314 Code appears for the diagnosis of the engine. The code has several meanings and to get the correct meaning of the code, it is necessary to know the model and manufactures. The dictionary meaning of the code B1314 is B for Body Code Problem is antilock brake system, electronic suspension and steering systems. 1 for MFG – Manufacturer Specific. 3 for IC Module 4X Ref Circuit Intermittent, No Pulses 1 for Low Coolant Circuit and 4 for Cruise Vehicle Speed and Set Speed Difference Too High. The oxygen sensors on your car count the oxygen in the expend to fix how rich or lean the ratio of fuel and air are in the cylinders. Improving this combination means better fuel economy and less consume emissions.