The automobile dictionary meaning of the car engine P1493 Code is found online and it is p for Powertrain Code Problem is related engine, transmission and emissions systems. 1 for MFG – Manufacturer Specific. 4 for Transmission. 9 for Crankshaft Position Sensor Circuit Performance and 3 for Transmission Control Module Reprogrammable Memory. Deactivation process of cylinders is attained by releasing a synchronizer pin that generally dovetails the cam follower and rocker arms. The engine P1493 code resolutions the synchronizer pin is unconfined using hydraulic compression which is measured by a dedicated solenoid. The engine P1493 engine code looks a kind of powertrain problem what is easy to solve.