This symbol does not always mean that the engine is broken. This may be due to these reasons as well. 1. The fuel tank cap is not tightly closed. 2. The catalytic converter or the exhaust gas treatment device has a problem 3. The O2 Sensor has a problem. 4. Air flow meter problem 5. Ignition coil and spark plug problem 6. Fuel vapor control system valve problem 7. Fuel injector problem 8. Oil vapor control system solenoid Fuel (Purge Solenoid) has a problem. 9. The water valve has a problem.