Contradiction with 2 Chronicles 36:9
Jehoiachin’s age is stated as eight years old when he began to reign, which contradicts with 2 Kings 15:8 if considering the similar start of reign accounts but with different ages mentioned.
2 Chronicles 36:9: Jehoiachin [was] eight years old when he began to reign, and he reigned three months and ten days in Jerusalem: and he did [that which was] evil in the sight of the LORD.
Contradiction with 2 Kings 8:26
Ahaziah was 22 years old when he began to reign, which contradicts if comparing the similar reign accounts and considering that 2 Kings 15:8 should maintain consistency in ages across similar accounts.
2 Kings 8:26: Two and twenty years old [was] Ahaziah when he began to reign; and he reigned one year in Jerusalem. And his mother's name [was] Athaliah, the daughter of Omri king of Israel. [daughter: or, granddaughter]