 Because the scan tool is a buffered signal. In my head, you're telling me one thing, and in my head I'm hearing lab scope. I don't know why. That's on me. But that sensor signal changes so fast. The reason it's setting the fault, because I'm thinking about why the PCM sets the fault. The PCM sets that fault because the value from the FTP sensor changes at least five times within three seconds. Think about that.