Here's why it's important to address it:
* Not all problems are immediately noticeable: The problem might be a minor sensor issue that doesn't affect drivability yet, but could eventually cause a major malfunction.
* Emissions: The problem could be related to emissions, and failing an emissions test can prevent you from renewing your registration.
* Fuel economy: A seemingly small issue could be subtly impacting your fuel efficiency.
* Future damage: Ignoring a problem can lead to further damage to your engine or other components.
What to do:
1. Get the code read: The check engine light doesn't tell you *what* the problem is, only that there *is* a problem. You need to get the diagnostic trouble code (DTC) read using an OBD-II scanner. Auto parts stores often offer this service for free.
2. Interpret the code (or have a mechanic do it): Once you have the code, you can look it up online or have a mechanic interpret it. This will tell you the specific problem the car's computer has detected.
3. Address the issue: Depending on the code and the severity of the problem, you might be able to fix it yourself (minor things like replacing a gas cap), or you'll need to take it to a mechanic.
In short, a check engine light, even with a seemingly fine-running car, requires attention. Ignoring it is a risk.
