Q:

Will a check engine light clear on its own?

A:

Quick Answer

The Check Engine or Service Engine Soon indicators illuminate when responding to a sensor detecting a problem, and the indicator generally stays on until the problem is repaired. If the indicator light goes off, it can mean the car auto-corrected the problem or the sensor emitting the warning is faulty.

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Full Answer

Technically, this feature is known as the Malfunction Indicator Light, or MIL, and it is used to inform the driver of a failure in the engine or transmission control system that could affect vehicle emissions. It can be an indicator of either a major problem or a faulty sensor. Even a loose gas cap can trigger the warning.

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