Wait for the code scanner to read the trouble codes stored in the engine computer, then use the scanner to delete them.
Disconnect the scanner.
Make sure the key is in the run position with the engine off while using the scanner. If the engine is running, the scanner may not be able to read all trouble codes. If you do not own a code scanner and do not want to buy one, many auto parts stores will read and reset engine trouble codes at little or no cost.
Reseting the check engine light will not correct the underlying cause of the trouble code if an emissions component is malfunctioning. Ignoring troublecodes can lead to significant vehicle damage.
Items you will need: Diagnostic code scanner