What emission systems does the pcm control?

The Powertrain Control Module (PCM) manages several emission control systems, primarily including the Exhaust Gas Recirculation (EGR) system, the Positive Crankcase Ventilation (PCV) system, and the catalytic converter operation. It monitors and adjusts parameters to optimize fuel combustion, reduce harmful emissions, and ensure compliance with environmental regulations. Additionally, the PCM may control the oxygen sensors and the air-fuel ratio to further minimize pollutants emitted from the vehicle.