The dictionary meaning of the B2149 Code is important thing to identify the problem of the engine. The dictionary meaning of the code is available online and you can use this meaning to get the problem but solving the engine problem of the car, brand name and model number of the car is important. According to dictionary meaning, the code describes as 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 9 for Kick-Down Switch Failed Short. Now try to repair the problem from engine.