HP scanner not detecting/clearing DTC's?
 

I've had a high idle for months, just got HPtuners and VCM scanner and went to scan for DTC's and found nothing. My SES light was on right up until I plugged it in, but when I scanned for DTC's it showed nothing and now the light is gone :confused:

did I somehow clear it by accident?

Possibly, if you hit the clear dtc's box it will clear them