Care Code 205.2 [LU003]

I started receiving this Care Code 205.2 [LU003] a few days ago when I tried to access my email on a PC.  Like most people I receive my email on my PC and on my iPhone.  I can reset my password to get back in to my email on one device sometimes, but when I try to update my password the other deivce will get this Care Code again.  Basicly I can only access my email from one device because the other device will receive Care Code 205.2 [LU003] even thouugh it's the correct password.  This is driving me nuts because I don't know how to fix it or where to get help!!!