I remember seeing something like that as a topic either in the manual or a web site. I'll check. It had to do with running too low on gas in the tank. Do you do this or empty the tank?
I am not sure that is the answer.. I won't rule it out though . The thing is i filled up the car this past Sat. and it never happened until today. I never run the car close to empty .
I routinely (every tank) run my tank to the red light. At least twice I've completely run it out of gas (like push it through the intersection, call Triple A). I think you'd do well to trace down the wiring for the sensor to the tank and give the connectors a good cleaning.