A year or so ago, my 2010 Toyota Camry threw a trouble code and turned on the "Check Engine" light. I searched for my OBD II code reader but couldn't find it. So I was forced to go too the Toyota dealer, who charged me $142 to tell me that my gas cap was not screwed on tightly enough. Later, after I had found my code reader, the same code appeared. I looked it up on the Internet and discovered that the gas cap tightening was an issue.
A few years later, I was doing some work for a widow. At one point she mentioned that her car was displaying a low tire icon on the dashboard. I checked and the icon was the Check Egine light. I put my OBD II reader on it and P0440 came up. By this time I had forgotten the meaning of that code, so we went on the internet and found it. Loose gas cap the most common common cause of this code being thrown. I turned to the widow and asked, "Do you pump your own gas?" She said yes, so I tightened it and told her to call me back if the code reappeared.
Having all this freshly in mind, I got a call from a longtime friend, who mentioned that his car was displaying the Check Engine icon. I brought my OBD II code reader to lunch with me. When, after lunch, we hooked up the reader, the explanation was P0440. I didn't need the diagnostic book that explains codes. Because this event was the latest in a sequence of God-defined event, I knew I would succeed. We went to the gas cap and tightened it substantially.
If something is called to your attention, remember it, and think about how it might be God calling with an adventure that will be useful to you in the future. How do you separate random events from a clearly intentional set of circumstances?