The first code is misfire on cylinder 2 and the second code is thermostat related. On the misfire I would check the coil and then if that was good a compression / leak down test. For the P0128 check the coolant level, thermostat housing and thermostat. I’m just an old shade tree mechanic and my knowledge is limited but those are the areas I would start. Hopefully it will be something easy and you’ll be up and running at full strength in no time.
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