Does the Three-Way Catalytic Converter Malfunction Light Affect the Car?

[Francisco]

The three-way catalytic converter malfunction can affect many aspects of the car, including annual inspection, fuel consumption, power, and exhaust emissions. Below are the specific impacts: 1. Excessive exhaust emissions: If the three-way catalytic converter is clogged or fails, harmful gases such as CO and NOx are directly emitted, resulting in non-compliant exhaust emissions. 2. Increased fuel consumption: A clogged three-way catalytic converter affects the normal operation of the oxygen sensor, which in turn affects the accuracy of the oxygen sensor signals received by the engine. This leads to inaccurate control of fuel injection, air intake, and ignition, naturally increasing fuel consumption. 3. Poor exhaust flow and reduced power: This is more noticeable in turbocharged models. When high-pressure exhaust is needed, a clogged three-way catalytic converter restricts exhaust flow, affecting air intake, reducing engine power, and causing sluggish acceleration.