Great point. Hubby is very mechanically inclined and has fixed the majority of issues on our vehicles from his 37 yrs of troubleshooting machines for an auto maker. Upgrading to 2016 and 2017 vehicles requiring computer diagnostics since retiring is frustrating. Your (George_San_Jose1) patience in explanation gives even me a good idea of the diagnostic process. I come from a Seabee Father who taught and required me to change points and plugs as well as oil and tires in order to get my license (dates me). Safety is ingrained in me and I am going to keep reading up on these bulletins in the event something else throws codes. I can’t thank you enough 
Paul thanks you too. Blessings for your assistance