Uh-oh. A warning light has turned on in your car. What should you do? Thankfully the Car Doctor, John Paul from AAA Northeast, has the answers.

The check engine light just came on with my 2014 Forester. At the same time, another warning light came on of a car with two zigzag lines behind it.

Problems with catalytic converters are one of the most common causes of check engine lights, but they’re extremely exp ...