Check engine light 1st time checked the codes for heater blower now coolant temp

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15 Crysler 200 Check engine light and no heat blowing. I went to get it checked the code came up for heater blower. The problem stopped even check engine light went off. Now it's back on and the engine hot indicator comes on without the engine being hot. I went to get it check it's now saying coolant temp sensor. Today same problems with no heat.