The Camry PC valve is a vital component in your engine’s ventilation system, especially for Toyota Camry models with 3S and 5S engines manufactured between 1992 and 2002. This positive crankcase ventilation (PCV) valve regulates airflow between the crankcase and intake manifold, helping reduce engine pressure and emissions. A faulty Camry PC valve can cause poor fuel economy, oil leaks, and rough idling—symptoms that are often overlooked but easy to fix with this direct replacement.