The engine P0179 Code is necessary thing and do not use wrong meaning. The automobile dictionary meaning of the code is P for Powertrain Code Problem is related engine, transmission and emissions systems. 0 for SAE – Generic. 1 for Transmission. 7 for Vehicle Speed Output Circuit and 9 for Kick-Down Switch Failed Short. The powertrain problem of the car engine is solved easily. Deactivation of cylinders is realized by releasing a synchronizer pin that typically interlocks the cam follower and rocker arms. The engine P0179 code determinations the synchronizer pin is unconfined using hydraulic compression which is measured by a dedicated solenoid.