The general meaning of the B2559 Code is not very helpful and it is B for Body Code Problem is antilock brake system, electronic suspension and steering systems. 2 for MFG – Manufacturer Specific. 5 for Computer And Auxiliary Outputs. 5 for TP Sensor Learn Not Complete and 9 for Kick-Down Switch Failed Short. This meaning of the code is not necessary to use for solving the car engine. The actual meaning of the code is manufacturer meaning of the code. You will get the manufacturer meaning from the manual of the car. According to the manufacturer and model of the car, the meaning of the code does not remain same.