Got in my 2012 R56s (spicy) to go for a drive with my son today. The car briefly stuttered before gaining a little bit of rpm and evening out. Check engine light came on. Code was read and cleared by my kiwi 2 dongle.

P306C - Fuel system: Pressure briefly too high, RPM and load factor limited

Does anyone have any experience with this code? The car did it a few weekends ago after sitting for a couple days but no CEL that time. Thanks for your help