The B1381 Code appears for the error of the engine and the problem seems on the body. The B1381 Code has various meaning and to get the accurate meaning of the code, it is important to know the model and manufacturer of the car. For getting better help to solve the problem, reading the manual is very important. The B1381 code has dictionary meaning and it is also important to know. Meaning of the code 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. 8 for Exhaust Gas Recirculation System Valve one. 1 for TFP Valve Position Switch-Drive Without Drive Ratio.