I had that too. But in my case turning it off and on eliminated the error. Dealer checkup a few days later showed a problem with the fuel sensor which BMW replaced under warranty. This was before the dinan tune though.
2013 ///M5 Individual Monte Carlo Blue, Platinum Full Individual Merino, Platinum Alcantara, Piano Black, Exec Pkg, Drivers assistance pkg, Bang and Olufsen, 20" wheels, Eisenmann Sport, STIR+, LI Quad HP