If the CEL is on after an oil change, it means there's a separate issue that needs to be diagnosed. Ignoring a check engine light is strongly discouraged.
To address the CEL:
1. Get the code read: Take your car to an auto parts store (like AutoZone, Advance Auto Parts, etc.) They usually offer free OBD-II code reading services. This will give you a code that indicates the problem.
2. Diagnose the problem: Once you have the code, you can search online (or consult a repair manual) to understand what the code means. The problem might be relatively simple (loose gas cap), or it could require professional repair.
3. Fix the problem: Address the underlying issue causing the check engine light to illuminate.
4. Clear the code (if necessary): After the problem is fixed, *some* code readers can clear the code. Many auto parts stores offer this service for free. Do not clear the code before fixing the problem; this only hides the warning. The light will go off automatically once the problem is resolved and the car's computer detects this.
In short: Don't try to reset the check engine light. Find out *why* it's on. A 5000-mile oil change has no bearing on this.
