Tire light flashes a few seconds and stays constant. Any reason or fix? on 2009 Nissan Versa

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Not too sure why this happens. I'll be driving like normal and the tire light will do what I described in the question. It does go away after a minute or so.
(1) Answer
my experience in the 2009 is that tire pressure sensors rust (due to weather/car washes, etc). You may need new sensors that "fortunately" dealers have PLENTY in stock.