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P0019 LEXUS Description The Engine Control Module (ECM) controls the Oil Control Valve (OCV) to regulate the intake camshaft angle. As a result of the angle change, the engine timing is advance or retard. Optimizing engine timing will help the engine improve torque and fuel economy, and the exhaust emissions decrease under overall driving conditions. The Variable Valve Timing (VVT) system includes the Oil Control Valve (OCV) and VVT controller. The ECM detects the actual intake valve timing using signals from the camshaft and crankshaft position sensors, and performs feedback control.
It's possible the OCV valve is stuck in one position. You can try to remove them, and inspect each one. I'm not sure if they have a filter some where inline. I do remember on the 2GS 300. The filters tend to clogg over time. If you do try to inspect the OCV. Check the crank, cam sensors too. Maybe a loose connection.
I cleaned the 4 valves and verified them and they were working well,
I also changed the timing belt kit for some reason it was damaged, but it continues the car as if it were drowning if I accelerate it thoroughly
How verify the crank