The dictionary meaning of the B2317 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 and 1 for Low Coolant Circuit and 7 for Cruise Inhibit Control Circuit. While the fuel economy was raised, acceleration was very cooperated, and the loss of the engine vacuum led to a hazardous loss of braking help when the B2317 code system was in 4-cylinder mode. Body of the engine has the problem and it is very easy to solve at low cost.