Friday evening, May 20, the SES light came on. I determined that the code PO122, "Pedal Position Input A Circuit Low", if I recall correctly, was the explanation. (I do not have my notes with me as I write this.) Opening the hood, I saw that the large metal tube (crankcase breather tube?) running from the passenger-side valve cover to the rear of the air intake horn was not connected at the air horn. I reconnected it, and we've not seen the SES light come back on since.
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