If the light is due to a minor, temporary issue (like a loose gas cap):
* Drive the car: Sometimes, simply driving the car for a few days or a hundred miles or so will allow the onboard diagnostics (OBD) system to detect that the problem has resolved itself and automatically turn off the light.
If the light is due to a problem that needs repair:
* Get the code read: You MUST have the diagnostic trouble code (DTC) read by a professional mechanic or using an OBD-II scanner. The check engine light is just an indicator; the code tells you *what* triggered it. Ignoring the problem won't make the light go away, and could lead to further damage. Auto parts stores often offer free code readings.
* Repair the problem: Once you know the code, you can address the underlying issue. This might involve replacing a sensor, fixing a leak, or other repairs.
* After repair, the light *might* reset automatically: Once the problem is fixed, the light might turn off after a few drive cycles (start-stop cycles of the engine).
If the light persists even after repair:
* OBD-II scanner with reset function: Some OBD-II scanners allow you to clear the codes after repairs. This should only be done AFTER the problem has been fixed. Again, a mechanic is always the safest option.
Important Considerations:
* Don't just reset the light: Resetting the light without fixing the problem is dangerous. The underlying issue will likely persist and potentially cause more serious damage.
* Professional help is recommended: If you're not comfortable diagnosing and repairing car problems yourself, take your Pontiac to a qualified mechanic. They have the tools and expertise to properly diagnose and fix the issue.
In short, focusing on *fixing the problem* is far more important than resetting the light. The light is a symptom, not the disease. Find out what's wrong first!
