Will the check engine light come on if the catalytic converter is missing?

[VanKing]

The check engine light will not come on if the catalytic converter is missing. This is because the catalytic converter does not have a sensor. Introduction to the catalytic converter: The catalytic converter looks like a metal can from the outside, but it contains a 'substrate' inside for purifying exhaust gases. This honeycomb-shaped ceramic substrate is coated with a precious metal solution, which acts as a purifying agent. It can reduce HC and CO in the exhaust gases into water and CO2, while breaking down NOx into nitrogen and oxygen. This is the exhaust purification function of the catalytic converter. Introduction to the check engine light: The check engine light is a warning light that illuminates when a problem occurs in a certain part of the car. Its types include the engine malfunction light, the exhaust emission indicator light, etc.