The engine P213C Code has verities of problem and if right meaning of the code is not used, you may not easily solve the car engine problem. You need to start process to identify the real problem of the car engine. The engine P213c code seems a kind of powertrain problem and this problem is very easy to solve. When fuel economy was enlarged, hurrying was very cooperated, and the loss of engine vacuum led to a hazardous loss of braking promotion when the engine P213c code system was in 4 cylinder mode. You may need to change the car engine part for solving the car engine problem.