2014 JKU CEL but no codes

Really strange, but my wife was complaining that her CEL came on the other day. I just assumed the broken clip on the IAT sensor had come off again, but the gorilla tape is still holding strong lol. So I hooked up the scanner to see what the code was, and nothing shows. I went ahead and cleared both the ECU and TCU codes just to see if it would go away but it did not. It runs and drives fine, no issues other than a reported terrible fuel mileage. Does it have anything to do with the scanner side for Dodge not being as robust as GM? :shrug: