Yes, I used a code reader. I know they the two lights are different, however 10 flashes = IAT according to my research, and when I used an OBD-II reader and plugged into the data port, it specifically said "P0113 Intake Air temperature sensor 1 circuit high input" (along with the P0420), confirming that I read the flashes correctly.

The flashes haven't come back and I dont think the code has, but the car now has some slight idling problems when I drive, indicating that something new is indeed amiss thats associated with this issue. If its not my IAT sensor though, I don't know what other sensor or issue would cause that to be reported.