Knock sensor 2 circuit High Voltage

Replaced starter, had to remove knock sensor to do that.
Reinstalled and plugged back in, now getting check engine, with above code.
Removed sensor again, (had to remove cat pipe again, ughh)
There is no ohm reading at the sensor terminal, should there be?

How do I check the wiring, and what do I look for?
What terminals at the ecu is that sensor located?

I ordered a new sensor, for today. But if it’s a wiring problem, how do I troubleshoot it
Thanks, Joe