My “Check Engine” Light Has Come On, and What Should I Do When It Does?
When you start your vehicle, the check engine light comes on momentarily to test the engine/emission control system and
bulb. The system is self-diagnostic and the light is a way to communicate trouble. The system is designed to function in a
“limp home” mode when trouble occurs and the light comes on – and stays on. However, take your vehicle Auto Service Department right away (or if you are traveling, to the nearest Authorized Service Center).