In this video i go over what caused this code. In this case the harness had to be updated. The updated harness is a one piece harness and the Temp sensor is built right in. The valvebody has to come out to remove and install the updated internal harness. I also show how to remove the valvebody, install the new harness and reinstall the valvebody. There is also a TSB on this code Hyundai Bulletin #14-AT=010.
Happy Easter to all and please stay safe.