This engine P2091 Code plays vital role for solving the car engine. The car engine will use the meaning of the code while the car engine will be fixed. The meaning of the code should be first manufacturer’s meaning and this meaning is real meaning. Without using the real meaning, the problem of the car engine may not be fixed easily. Due to use of the wrong meaning of the code, the car engine may get new problem what is not easy to solve. The car engine should be fast and solve the car engine problem by the manufacturer’s provided right meaning.