What could be the reason for the check engine light turning on in my 2007 Buick Lucerne?

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While cruising down the road in your 2007 Buick Lucerne on a sunny afternoon, you suddenly see the check engine light turn on. There could be a few reasons for this, so you need to figure out the culprit. Firstly, it's good to know that the common reason for the engine light coming on randomly is a few minor issues. If you recently filled up with gas, check to ensure your gas cap is closed properly and securely. If you hear a knocking sound from the front of the engine, it's likely that your oil pressure is low. You can fix this by topping up the reservoir with SAE 5w-30 fully synthetic motor oil. If you notice a leak from the exhaust, like smoke, it could mean you have higher oxygen levels than what's safe for your system.

What could be the reason for the check engine light turning on in my 2007 Buick Lucerne?

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