The light came on when I started it and stayed on for about a minute then went out. I drove to pick up the wife, turned it off for a couple of minutes while I waited and fired it back up and it still wasn't on. Any ideas?
I havn't checked the codes yet.

 

So many code variations, it would be impossible to diagnose on the light alone.
Link for checking codes: Scoobypedia | Trusted knowledge for everything Subaru | Knowledge / Reading ECU Fault Codes

 

Showed error 22. Says that it is knock sensor.

 

Simular thread going on here: https://www.scoobynet.com/general-te...onnectors.html
with info on knock sensor.