The real meaning of the B2401 Code is correlated with the automobile engine and if the definition of the code is not correctly, it is not conceivable to explain the car engine. The automobile dictionary meaning of the engine is accessible and you can read it but it must not be so supportive for resolving the car engine problem. The general meaning of the code is B for Body Code Problem is antilock brake system, electronic suspension and steering systems. 2 for MFG – Manufacturer Specific. 4 for Transmission. 0 for IC Circuit High Voltage and 1 for TFP Valve Position Switch-Drive Without Drive Ratio.