The general meaning of the car engine P1779 Code is p for Powertrain Code Problem is related engine, transmission and emissions systems. 1 for MFG – Manufacturer Specific. 7 for Auxiliary Emission Controls. 7 for Vehicle Speed Output Circuit and 9 for Kick-Down Switch Failed Short. The deactivation process of cylinders is realized by discharging a synchronizer pin that typically interlocks the cam follower and rocker arms. The engine P1779 code tenacities the synchronizer pin what is released using hydraulic heaviness which is measured by a dedicated solenoid. You should study about the problem of the car engine before fixing the car engine issue.