The engine P040C Code is a short notification of the engine problem and this code has general meaning and real meaning. The real meaning of the code is manufacturer meaning. The automobile dictionary meaning is not real meaning and it is not appropriate for solving the car engine. The problem is Powertrain problem and it is easy to solve at the least price. The car engine system services specifically advanced hydraulic lifters for the engine P040c code intake and finish valves. The lifters can be distorted by disengaging an inner locking pin. The locking pin is detached by solenoids to modify oil compression fed into the lifter.