Read obd2 codes without scanner ford taurus?

To read trouble codes without an OBD scanner on the Ford Taurus You will need to follow these steps. First press and hold down the reset button on the odometer. While still holding it down turn the key to the accessory position. Keeps holding the button and watch the dash, You will see the word TEST appear in green. Now You can let go of the button. Pressing it now will cycle through the selectable options. Keep going till You see the option for DTC. This will cause the screen to display the trouble code for You. It will not tell You what it means, so You will need to check that elsewhere.