This fault is about the O2 sensor on Bank2, Spot2. There are about 5 things which can be wrong with the car. Since you have a scanner, I want to direct you to a Website, 2carpros.com/questions Chrysler 300/O2 results
You may have to reword the search, but I found another car like yours with the same problem. This article is good because it gives the test voltage for each potential problem and you verify the wiring is correct before buying an O2 sensor. It also discusses the PCM as a potential problem.
I would check the connector for the PCM first for corrosion, then do the rest of the tests. If you have to remove the O2 sensor, sometimes you need to heat it to remove it from the fitting and you need a sensor socket.
I usually don't redirect a client to another site, but the material will give you the best chance at finding your problem. I hope you find my solution very helpful in getting your car fixed.
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