Recently my chek engine light went on with an image of the engine.what's this on 2008 BMW 335xi

When this happened the car lost power. The image of the engine was followed by the check engine light on. When I looked this up in the owners manul it said if the image is half shaded in yellowish/orange color, it means that the car is operating at minimum power. could you tell me what are the possibilities why this is happening?

Asked by for the 2008 BMW 335xi