08 Prius red triangle

Hey all. Hoping someone has an idea to help me diagnose. My 2008 Prius has been intermittently throwing the red triangle in the dash along with the message on the radio screen “there is an issue with the P lock system…” i have since replaced the 12v battery, oil levels are fine. Connected to dr prius that says everything is operating fine and not finding any trouble codes. Car has 230k miles. Runs and drives perfectly fine. When i got the car it did have the common dashboard issue where it intermittently goes black and shows nothing, i sent it in for repairs to a guy on ebay and was working fine for a few months. Is it possible a sensor got damaged during the repair and its just glitching out? Thanks for any replies!