How to repair Error Codes: P0700 & P0888

What is your question?

I had the Coolant Fan replaced on my 2002 PT Cruiser Dec. 2, 2019. The mechanic had problems with the electrical system working after the installation of the Electric Coolant Fan. He could not get the car to start. It took a couple of days to fix that. When I picked it up, I noticed that it seem to be "Idle" high, as if transmission was running in second gear. I also noticed the "Check Engine" light on and stopped by Auto Zone on the way home and got the error codes. Now I'm seeing a problem I've never had before. Check engine light showing error codes: P0700 Transmission Control System (MIL Request) P0888 TCM Power Relay Sense Circuit

What makes this problem better or worse?

Seems to running fine. Check engine light occurred less than 4 days ago, still running but still showing code.

How long has your 2002 Chrysler PT Cruiser had this problem?

Four days