The problem could range from something minor and easily fixable (like a loose gas cap) to something major and expensive (like a failing catalytic converter).
To find out the specific problem, you need to:
* Get the diagnostic trouble codes (DTCs) read: This can be done in a few ways:
* OBD-II scanner: You can buy a relatively inexpensive OBD-II scanner at most auto parts stores. These plug into your vehicle's OBD-II port (usually under the dashboard) and will display the DTCs.
* Auto parts store: Many auto parts stores will read the codes for free. They can then often give you a potential diagnosis and estimate of repair costs.
* Mechanic: A qualified mechanic will have the tools and expertise to read the codes, diagnose the problem, and perform the necessary repairs.
Without knowing the specific DTCs, it's impossible to say what's wrong. Ignoring the light could lead to further damage, reduced fuel efficiency, and even failure to pass emissions testing.
Don't delay getting it checked! The sooner you address the issue, the better.
