This was my experience on July 31st, 2020
For a week I had the message “Service Engine Soon” on the dashboard of my 2009 Nissan Versa. The manual said that the message meant that there was a problem with emissions, most likely needing a new gas cap. I had had this same message in the past and a new gas cap solved the problem. Since I was driving from New Jersey to South Carolina I thought that as I began my trip (in the rain) I should get a new gas cap from the Parts Department and eliminate the dashboard message. So I purchased a new gas cap (about $30) at Atlantic City Nissan. When I put it on and started to drive off, however, the message was still there. Before I went too far, I thought that since I’m going on a 500-mile drive (as I said, in the rain), what if it is a bigger problem? So I went to the Service Department and explained my predicament. They said they would need to do a diagnostic test to determine what was wrong, and I said okay. It cost about $132.00 and took an hour and a half. Their diagnosis was that the fuel pump needed to be replaced, and they said they had one in stock, but it would take another hour and a half or more to replace it. I decided against it because I had a long trip ahead of me and didn’t want to use up more time, so I said I will take a chance and go without a new fuel pump. The dashboard message was still there but I went anyway. I hoped it might go away after the car was driven some distance. A couple hours later I got some gas but once again the light stayed on. Several hours later I got gas again, only this time I noticed the gas cap had instructions on it saying to only turn it one click when putting it back on (the other times, and even with my old gas cap, I had used 2 or 3 clicks). I did what it said and when I started up the car the message was gone! Hours later I stopped for another tank of gas, used one click, and the message never reappeared. Of course, I was annoyed I hadn’t seen the instructions sooner, but I was more annoyed about getting a $132.00 diagnosis that certainly appears to be wrong! When I got to SC I looked up what happens when a fuel pump goes bad. My car did not show any of those symptoms! I am allowing one star for this review because all the people I dealt with were very pleasant.