Contradiction with 1 Kings 15:2
1 Kings 15:2 mentions that Abijam's mother was Maachah, the daughter of Abishalom, while 2 Chronicles 11:18 states Rehoboam's wife was Mahalath.
1 Kings 15:2: Three years reigned he in Jerusalem. And his mother's name [was] Maachah, the daughter of Abishalom. [Maachah...: also called, Michaiah the daughter of Uriel] [Abishalom: also called, Absalom]
Contradiction with 2 Chronicles 13:2
This verse names Abijah's mother as Michaiah, the daughter of Uriel of Gibeah, contrasting with 2 Chronicles 11:18 where Rehoboam's wife is named Mahalath.
2 Chronicles 13:2: He reigned three years in Jerusalem. His mother's name also [was] Michaiah the daughter of Uriel of Gibeah. And there was war between Abijah and Jeroboam.