Emission light stays on. on 2003 Ford Windstar

Is engine light and emissions light one and the same on a 2003 ford windstar LT?
fuel injector problem or maf sensor fault ?

Asked by for the 2003 Ford Windstar
The lights are the same, and there are hundreds of codes, so have it checked out. Once the code(s) are pulled a diagnosis will be needed to determine the fault.