The white clip that locks the pipe coupler is part #: 999-230-535-40 in the parts catalog on page 44/45. That part has been superseded to part #: 999-230-512-40.
Anyone have a replacement part number for the hose itself? 98635557507 NLA according to my searches. I will go to the dealer on Monday. I have the same leak and CEL numbers.
Porsche does have the part. I don't know why some show it as NLA. In the meantime, while waiting for the part to arrive, I did wrap the holes with tape. Sealed it up and took care of the CELs. I wish I found this fix a long time ago.