Cool 2016 Hyundai Sonata Flashing Check Engine Light References. Average failure mileage is 57,500 miles. But if not, i guess i'll go in an try to get the gas cap replaced.
So first thing i did was check the gas gap, and it was indeed loose. Possible, but not likely since i buy chevron which is top tier gas. If you have a flashing check engine light, turn off the engine immediately to prevent potential motor damage.
