The meanings of all the codes are given in the code list for OBD-II in the sticky thread "how to pull codes" at the top of some of these forum pages.
Open the thread, then scroll down a bit to the link with "OBD-II" in the URL. When that opens, you can scroll down to the different P, U, B, code lists.
Open the thread, then scroll down a bit to the link with "OBD-II" in the URL. When that opens, you can scroll down to the different P, U, B, code lists.