What does it mean when your check engine light is on

Hi - Dave here, contributing to RepairPal and providing expert advice since 2010. When your check engine light is on, it means there is an engine performance or emissions related concern that is actively causing a problem for the vehicle. Fuel economy and emissions controls are likely to be affected. Diagnostic testing is likely to reveal clues of what is wrong - seek guidance at a shop near you. https://repairpal.com/auto-repair-near-me Click the link to find some shops near you who can help out!