The dictionary meaning of the B2107 Code is not necessary to solve the problem. You will get the real meaning of the code when the code is defined by the manufacture. That is why, you need to read the manual of the car engine and for solving the car engine problem follow the manufacturer and model number of the car. The code B2107 may also be activated by liabilities former down the line. Such as, a dull MAF sensor might be producing the car to overreact in its fuel-trim changes. As a result, oxygen sensors are possible to report fuel mix problems.