This code popped up today for me soon after fueling up at the station. My drive modes were gone and I decided to go to Advanced Auto Parts immediately. I purchased a code reader and some Mass Airflow Sensor cleaner just in case it was dirty from the K&N CAI filter. So far after erasing the code it has not popped up after driving 40 miles today, I'm going to check the mass airflow sensor first because I highly doubt it's the catalytic converter. But it could also be the O2 sensors, I'm checking the cheap parts first because reasons.