[Sewie]

What tires are you running? Check the sticker on the driver side door jamb. That will tell you your recommended pressure.

Also, as part of the re-learn process, you have to let out a certain amount of air to trigger the sensor. It's possbile that is what made the DIC warning go away, not the actual PSI.

And it could even be a bad sensor. Those things are flaky at best.