It is pretty easy to dismiss the "check engine" light as just stupid, because, well, it is. I suppose if you thought that the cause of smoke coming from under your hood had something to do with the floor mats, then, sure, the "check engine" light is handy, but beyond that, it's useless. But that's not the real problem. The real problem is that the "check engine" light is a tool for the propagation of consumer ignorance about their cars. Which is why it needs to die. Now.
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