Due to the diagnosis of the car engine, the engine P210A Code may come on the screen of the car engine code reader. Do not use any meaning of the code. You will find various meanings of the same code from various sources or manufacturers. The engine code P210A is very important thing and powertrain problem of the engine is easy to solve by the automobile engineer. The engine P210a code resolves the synchronizer pin is unconfined using hydraulic compression which is maintained by a devoted solenoid. Diffusion of cylinders is realized by releasing a synchronizer pin that usually interlocks the cam follower and rocker arms.