Codes p1116 and p1121

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Here is the workup for DTC P1116 : https://share.qclt.com/%E4%B8%B0%E7%94%B0%E6%99%AE%E7%91%9E%E6%96%AF%E5%8E%9F%E5%8E%82%E8%8B%B1%E6%96%87%E6%89%8B%E5%86%8Cpdf%E6%A0%BC%E5%BC%8F/Repair%20Manual/04pruisr/05/2054m/cip1116.pdf

Here is the workup for DTC P1121 : https://share.qclt.com/%E4%B8%B0%E7%94%B0%E6%99%AE%E7%91%9E%E6%96%AF%E5%8E%9F%E5%8E%82%E8%8B%B1%E6%96%87%E6%89%8B%E5%86%8Cpdf%E6%A0%BC%E5%BC%8F/Repair%20Manual/04pruisr/05/2054m/cip1121a.pdf

 

As you can see from the workup in post #2 for the P1116, this code relates to the information the computer is seeing from the temperature sensor. The computer does not think what it is seeing can be correct. One reason would be air in the CHS tank not flowing in or out due to an airlock. Did you bleed the CHR? Another reason might be a faulty sensor. Again, the workup will guide you through various checks to point you in the right direction.

The workup for P1121 describes how to use Techstream (or other capable and fully functioned OBDII diagnostic tool) to exercise the three-way coolant control valve, so you should be able to verify whether it is functioning correctly.