Contradiction with 1 Kings 11:11
This verse explains that the kingdom was torn from Solomon because he had turned away from God, yet 2 Kings 3:5 presents Moab as rebelling without mention of God's intervention.
1 Kings 11:11: Wherefore the LORD said unto Solomon, Forasmuch as this is done of thee, and thou hast not kept my covenant and my statutes, which I have commanded thee, I will surely rend the kingdom from thee, and will give it to thy servant. [is done...: Heb. is with thee]
Contradiction with 2 Kings 8:20
In this verse, Edom revolts against Judah's rule, showing that rebellious uprisings were frequent and natural occurrences, while 2 Kings 3:5 might imply a sudden or exceptional event.
2 Kings 8:20: In his days Edom revolted from under the hand of Judah, and made a king over themselves.