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What are the common causes of a check engine light in a BMW 1 Series?

My check engine light recently turned on in my BMW 1 Series. What could be the possible reasons for this?

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M

One of the most common reasons for a check engine light in a BMW 1 Series is a faulty oxygen sensor. This can affect the overall performance of the vehicle and should be addressed immediately.

L

Another potential cause could be a loose gas cap. Make sure to check that the gas cap is tightly sealed and secure.

J

A failing catalytic converter can also trigger the check engine light. This can result in decreased fuel efficiency and may require replacement.

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