What might cause my 2019 BMW X3 check engine light to come on?

You're driving Your 2019 BMW X3 down the highway, when suddenly Your check engine light illuminates on Your dashboard. There can be a variety of reasons this may happen. First, You could be experiencing faulty fuel injectors, or a problem within the fuel injection system. You also may have a clogged or filthy mass air flow sensor (MAF). You may even have a simple case of bad spark plugs. If You find You need to replace the maf, it will cost between $13 and $83 for parts alone. For spark plugs, You can expect to pay between $8 and $85, depending on brand and quantity purchased. A new fuel injector can easily cost between $38 and $174 each.