Here's what it means when it comes on:
* The car's computer has detected a problem with the engine or emissions system. This could be something minor, like a loose gas cap, or something more serious, like a faulty sensor or a malfunctioning catalytic converter.
* It's a warning, not an emergency. You don't need to pull over immediately, but you should get the problem checked out as soon as possible.
* The light may flash or stay on steadily. A flashing check engine light typically indicates a more serious problem that requires immediate attention, like a misfire.
Here's what you should do when the check engine light comes on:
1. Don't panic! The light is designed to warn you about a potential problem.
2. Check your owner's manual. Some cars have a feature that allows you to read the diagnostic trouble code (DTC) yourself. This code can provide more information about the potential problem.
3. Have the car diagnosed. Take your car to a mechanic who can use a scan tool to read the DTC and determine the cause of the problem.
4. Fix the problem. Once the mechanic identifies the issue, they can repair it and reset the check engine light.
It's important to note that simply resetting the check engine light without addressing the underlying problem will not fix the issue and may even damage your engine.
