It is not an ideal situation if you depend on one coder. The team should have the opportunity to go to and fro the data, the codes and the memos. Too small a number of coders can be counterbalanced by memo writing and by having team sessions both on memos and codes. Memos should also be written on team discussions.
The issue is whether another coder would have applied the same codes in the same way. When you are using what is know as "manifest content" coding, then you have procedures such as inter-rater reliability to ensure that the codes are being used in a reliable fashion.
In contrast to that approach, you often are coding for more "latent content." When you are using this more interpretive framework, there is more subjectivity involved, and inter-rater reliability would not be relevant.
So, the answer to your questions depends on the type of coding you are doing and the purpose your coding is designed to accomplish.
Depends on what is your paradigm. If you follow feminist methodology, the data is believed to be a co-construction of the researcher and the researched, the data analysis would be coder specific. You cannot have a standardized analysis framework.