If the dongle has some LEDs, they should start blinking. Don’t start the engine because to reset the light, the engine shouldn’t be running. Make sure the adapter is tightly attached but don’t use too much force. Typical place for the socket is the compartment under the driver’s side dashboard.Ĭonnect the OBD2 dongle to the connector. The connector should be located close to the steering wheel.

Search for 16-pin D-shaped connector that will match the adapter. Locate the OBD-II diagnostic connector in your car. The codes help you identify the issue and determine the cause. The DTCs will tell you the reason for the fault. Reading the diagnostic trouble codes (DTCs) is an important step to start with. This tutorial will show you how to read the diagnostic trouble codes and reset the Check Engine Light yourself.

When the vehicle detects an issue, it will set an active trouble code and trigger the CEL. There is always at least one OBD2 diagnostic trouble code associated with the check engine light. Ignoring the warning can cause serious damage to the car. This warning light is the main indicator to warn you about problems with the vehicle. The indicator light is sometimes also referred as Malfunction Indicator Light (MIL). This malfunction is indicated by triggering the Check Engine Light (CEL). Either the engine is having a problem or the emission control system has detected an issue. The Check Engine Light indicates that there is a problem with the car. Editor's note: This post has been updated in March 2020 for accuracy and the latest information.

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