Therefore, you can't simply reset the light. Attempting to do so without addressing the cause will only result in the light coming back on.
Here's what you should do:
1. Get the diagnostic trouble code (DTC): You'll need to get the code that's causing the Check Engine light to illuminate. You can do this in a couple of ways:
* OBD-II Scanner: The most reliable method is using an OBD-II scanner. These are relatively inexpensive and available at most auto parts stores. Plug it into the car's OBD-II port (usually under the dashboard) and it will read the DTC.
* Auto Parts Store: Many auto parts stores will read the code for free.
2. Identify the Problem: Once you have the DTC, use a repair manual (Chilton's or Haynes are good options) or online resources to find out what the code means. This will pinpoint the problem causing the CEL.
3. Fix the Problem: Repair the identified issue. This might involve replacing a sensor, fixing a leak, or addressing a more significant mechanical problem.
4. Clear the Code (if needed): *After* you've fixed the problem, some OBD-II scanners can clear the code. Many auto parts stores will also do this for you. The light should now go off after a few drive cycles (start the car, drive for a while, and turn it off). If the light remains on, there's still an issue to address.
Important Note: Ignoring the Check Engine light is risky. The underlying problem could cause further damage to your car's engine or other systems. Addressing the issue promptly is essential.
