The general meaning of the B2381 Code is related with the car engine and if you do not get real meaning but you have experience or machines, you should not use the general meaning of the code and that 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. 8 for Exhaust Gas Recirculation System Valve 1 and 1 for TFP Valve Position Switch-Drive Without Drive Ratio. The body of the engine has the problem and without changing any component problem of the car engine can be solved.