The meaning of the B2311 Code is accessible as real and general meaning. The general meaning of the code is not important thing for the car engine problem. The body of the car engine has the problem and it is essential to fix the car engine before any accident occur. You will get the general meaning from different automobile repairing website but you should not depend on it. 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. 3 for IC Module 4X Ref Circuit Intermittent, No Pulses. 1 for Low Coolant Circuit and 1 for TFP Valve Position Switch-Drive Without Drive Ratio.