Common Porsche Faults: The “Poss. No R Gear” Issue in PDK Gearboxes Today, we’re shedding light on a common and frustrating issue affecting several Porsche models equipped with the PDK (Porsche Doppelkupplung) gearbox—including the Panamera, Boxster, Carrera 911, and 718 At Germanmonster, our certified specialists—trained and approved in Munich—are fully qualified to diagnose and resolve