This website has an article about the on-board diagnostics system (OBD system) which turns on the Check Engine light in a motorized vehicle: https://motorist.org/articles/check-engine-light
Hope it helps you!
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Morris Worm
Nimda
ILOVEYOU
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Stuxnet
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Conficker
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Welchia
Shlayer
Anti-viruses:
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Home is the answer. Hope this helps. :)