What does it mean when car says service engine soon?
What does it mean when car says service engine soon? A Service Engine Soon light will appear when your cars onboard diagnostic system (the ECM) detects a potential problem. Its purpose is to alert you of any minor issues before they become major concerns. Common causes include needing an oil change, or a new cabin filter or air filter. What to do if service engine soon does not go off? If the light does not go off, try buying and installing a new gas cap. They cost less than $10 at your local car parts retailer. It is worth ruling...