Sounds like you may have found your fix. I hope so.

And yes the drive cycles should clear it assuming that was the fault.

 

A drive cycle is every 1k miles? If I have 75 560 mi, I assume that in 440 mi it might clear?

 

No, I was referring to number of drives, not distance. That is assuming the drives are at least 8-10 miles each. It should clear long before another 440 miles. My last one cleared after driving to the grocery store (~4 miles) and it went off when I got in to return home.

The other way is to clear it with a code reader and see if it comes back.