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What causes the Check Engine light to come on in a BMW 3 Series?

I recently noticed that the Check Engine light in my BMW 3 Series turned on, but there doesn't seem to be any noticeable issues with the car. What could be causing this and how can I fix it?

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The Check Engine light can be triggered by many different factors, such as a loose gas cap, faulty oxygen sensor, or engine misfire. It's important to get the car checked by a mechanic as soon as possible to determine the exact cause.

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I had a similar issue with my BMW 3 Series and it turned out to be a faulty catalytic converter. It's not a cheap fix, but it's important to get it fixed for the sake of your car's performance and the environment.

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