This inspection involves a visual assessment of the vehicle’s emissions control system. The technician inspects components like the catalytic converter, hoses, and the overall condition of the exhaust system to ensure it is not leaking or damaged. This helps in identifying potential issues that could affect emissions performance.

The catalytic converter plays a critical role in reducing the vehicle's harmful emissions. This inspection checks whether the catalytic converter is functioning correctly, ensuring it efficiently reduces pollutants like carbon monoxide, hydrocarbons, and nitrogen oxides in the exhaust.