9 Problems That Could Be Activating Your Car’s Check Engine Light

The catalytic converter is an integral part of your car’s exhaust system, and is mandated by federal and state emissions laws. The catalytic converter transforms carbon monoxide (CO), a dangerous byproduct of combustion, into carbon dioxide (CO2) that, while dangerous in its own right, does not have the same immediate health risks as CO. If your catalytic converter fails, your car may run at a higher temperature, will suffer reduced performance and fuel economy, and will not pass required emissions tests.

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