A dirty filter lets dirt and debris enter the engine. This can reduce power, hurt fuel economy, and over time cause engine wear — leading to expensive repairs.

No. An engine air filter protects the engine intake. Cabin odors are generally handled by the cabin air filter.

A severely restricted or incorrectly installed filter may affect airflow, but a warning light can have many causes. Professional diagnosis may be needed.

A dirty filter lets dirt and debris enter the engine. This can reduce power, hurt fuel economy, and over time cause engine wear — leading to expensive repairs.

No. An engine air filter protects the engine intake. Cabin odors are generally handled by the cabin air filter.

A severely restricted or incorrectly installed filter may affect airflow, but a warning light can have many causes. Professional diagnosis may be needed.