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Q: OBD II communication failure on 1999 Hyundai Tiburon

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Car failed smog because of no communication. My car stereo was stollen. Does power get drawn from there? It's the only difference from last year.
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Not all smog check machines are the same, and some have trouble talking to Hyundais. A helpful mechanic had heard of this problem and referred me to the State smog referee, where my car passed successfully. I even got my money back at the first smog place.
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