Car Smells Like Rotten Eggs: Check Engine Light On

What Does It Mean When Your Car Smells Like Rotten Eggs?

If your car smells like rotten eggs, it’s a sign that something is wrong with your catalytic converter. The catalytic converter is a device that helps to reduce emissions from your car’s exhaust system. When the catalytic converter is working properly, it converts harmful pollutants into less harmful gases. However, if the catalytic converter is damaged or malfunctioning, it can release a rotten egg smell.

What Causes the Catalytic Converter to Fail?

There are a number of things that can cause the catalytic converter to fail, including:

Using leaded gasoline
Driving with a misfiring engine
Running the engine too rich or too lean
Overheating the engine
Physical damage to the catalytic converter

What Are the Symptoms of a Bad Catalytic Converter?

In addition to the rotten egg smell, there are a number of other symptoms that can indicate a bad catalytic converter, including:

Check engine light is on
Reduced engine power
Poor fuel economy
Increased emissions

What Should I Do If My Car Smells Like Rotten Eggs?

If your car smells like rotten eggs, it’s important to have it checked out by a mechanic as soon as possible. Driving with a bad catalytic converter can damage your engine and other components of your car’s exhaust system. In addition, it can also lead to increased emissions, which can contribute to air pollution.