The little lady had a 2012 Kia Soul that was the great car except it was sensitive to air filters. The first couple of times the "Check Engine" light came on, I checked the code and found it was set for "Clogged Air" Filter". I Looked at the filter and could only see some slight discoloration of the media. I thought "What the hell" and put it back in. I reset the codes, and all was well. A couple of weeks later and the light comes on again. I checked the code and find it's clogged again, so I took it out and inspected it. This time, it was a good if not better that it looked the last time. I shrug my shoulders and put it back in. This time, no matter what I do, I can't get the light to go off, so I finally installed the new filter, and off we go.
This went on for the 12 years we had the car. The filter would go 3 to 12 months, and the light would come on. I'd pull the filter and usually it would be clean as a hound's tooth. Oh, once I found what looked like the wing of a house fly, another time, a chunk of a leaf about 1/4" square, but never anything that looked like a major obstruction. After about 4 years of this BS, I bought a case of filters on Amazon for less than $100. After that, all I needed was to indicate the half full case of filters and the Rapid Oil Change guys would take care of them, no problem.