Disconnect the negative battery cable
Turn the ignition switch to the “ON” position.
Leave the ignition switch in the “ON” position for at least 30 seconds, and disconnect the negative battery again.
Wait for about ten seconds for the check engine light to go out or clear if not, wait another cycle to make sure.
Connect the negative battery cable back to the battery terminal.
Start the engine, the check engine light should be reset now.
If the check engine light remains lit after resetting, there may be an underlying issue that needs to be diagnosed and repaired. It is recommended to have the car inspected by a qualified mechanic or check what triggered these warnings by connecting to some diagnostic tool if applicable and possible.
