The B2141 Code means B for Body Code Problem is antilock brake system, electronic suspension and steering systems. 2 for MFG – Manufacturer Specific. 1 for Transmission. 4 for BBV Sensor Circuit Low Voltage and 1 for TFP Valve Position Switch-Drive Without Drive Ratio. Now you have understood the code but if you do not get the real meaning of the code, it is not possible to fix the problem. This code can be explained by the manual of the manufacturer of the car. The same code is found for different car engines and manufacturers change the meaning of the code.