2016 Dodge ram 1500 won't start. I don't know if it is battery or a sensor

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2016 Dodge ram 1500 won't start. I turned engine off in reverse then turned it to park. Next time I tried to crank it would not start. I disconnected the battery for 30 minutes, connected it back and tried to start and now it says parking sensor is out on dash and still won't start and makes a clicking noise.

How long has your 2016 Ram 1500 had this problem?

2 days