What Does the Check Engine Light Mean on a Toyota Corolla?

corolla engine light mean Toyota
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What Does the Check Engine Light Mean on a Toyota Corolla?

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The check engine light on the instrument panel of all cars sold in the United States since the mid-1980s is connected to a diagnostic computer that monitors the engine and other systems, especially emissions control. If one of the diagnostic sensor readings is outside a specified range, the computer turns on the check engine light. The computer also captures a code identifying the bad reading.