These were the 5 most common car check engine light repairs in 2021, according to CarMD

When the check engine light comes on, it means the vehicle’s computer has detected a problem affecting emissions control or drivability. These problems may be minor, but they can still cause harm to the environment or affect the vehicle’s fuel economy. However, problems can be serious and lead to expensive repairs or maintenance if not addressed. This begs the question: What are the most common check engine light repairs?

CarMD reveals the most common check engine light repairs

Automotive repairs | Justin Sullivan/Getty Images

CarMD collects data on car repairs and publishes its Vehicle Health Index report on the most common check engine light problems, repairs and related costs. Using this report, let’s look at the five most common problems in 2021, including repair costs and frequency of occurrence.

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