Why is the Engine Light ON?

Engine Light ON - Service Engine Soon - Check Engine - Check Engine Light

Engine Light ON - Service Engine Soon - Check Engine - Check Engine Light

Engine Light ON - Service Engine Soon - Check Engine - Check Engine Light

If the light comes ON and stays ON, the On-Board Diagnostic (OBD) system has detected a problem. The OBD system monitors the vehicle performance and regulates engine speed (RPM), fuel mixture and ignition timing.

Related FAQ

- What is OBDII?

- How does the OBDII works?

- Why is the Engine Light ON?

- Is the OBD system working correctly?

- What does it mean if the Service Engine Soon or Check Engine light is blinking?

- What does it mean if the Service Engine Soon or Check Engine turns on while I'm driving?

- What should I do if the Service Engine Soon or Check Engine light stays on?

- What is Bank 1 and Bank 2?

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