This noise is happening on my 2013 Ford Fiesta SE after the check engine light came on this morning 15 miles into my 20 mile drive to work. I went to O'Reily Autoparts and they ran the diagnostic tool for me and the following error codes displayed.
P0420 Catalyst System Efficiency Below Threshold Bank 1
P2282 Air Leak Between Throttle Body and Intake Valve
P2279 Intake Air System Leak
P2281 MAF Air Leak
--probably unrelated codes also presented below--
C1B00 Steering Angle
U3003 Battery
Any clue what's happening?