What does the ford fiesta orange light on dashboard mean?

The Ford Fiesta uses different colored lights to represent a different aspect of Your vehicle's operating system and are color coded by urgency. So, when You see an orange or amber light on Your dashboard, it's informing You that there's an issue that You need to address soon. Typically, this isn't going to be as serious as a fault as a red light, but You still should address it as soon as possible. One thing You should have on hand is an OBD-II scanner; this will let You see if there are any diagnostic trouble codes associated with the light, which there typically are. Also, usually there's a symbol in addition to the light, which can help narrow down what system requires attention.