The Chronicler tells us that Asa, king of Judah, removed the high places from Judah:
2 Chronicles 14.1-6: 1 So Abijah slept with his fathers, and they buried him in the city of David, and his son Asa became king in his place. The land was undisturbed for ten years during his days. 2 Asa did good and right in the sight of the Lord his God, 3 for he removed the foreign altars and high places, tore down the sacred pillars, cut down the Asherim, 4 and commanded Judah to seek the Lord God of their fathers and to observe the law and the commandment. 5 He also removed the high places and the incense altars from all the cities of Judah. And the kingdom was undisturbed under him. 6 He built fortified cities in Judah, since the land was undisturbed, and there was no one at war with him during those years, because the Lord had given him rest.
Elsewhere, however, in a situation involving his use either of 1 Kings or of one of its sources, the Chronicler follows in lockstep and winds up creating a tension:
1 Kings 15.13-16: 13 He also removed Maacah his mother from being queen mother, because she had made a horrid image as an Asherah; and Asa cut down her horrid image and burned it at the brook Kidron. 14 But the high places were not taken away; nevertheless the heart of Asa was wholly devoted to the Lord all his days. 15 He brought into the house of the Lord the dedicated things of his father and his own dedicated things: silver and gold and utensils. 16 Now there was war between Asa and Baasha king of Israel all their days.
2 Chronicles 15.16-19: 16 He also removed Maacah, the mother of King Asa, from the position of queen mother, because she had made a horrid image as an Asherah, and Asa cut down her horrid image, crushed it and burned it at the brook Kidron. 17 But the high places were not removed from Israel; nevertheless Asa's heart was blameless all his days. 18 He brought into the house of God the dedicated things of his father and his own dedicated things: silver and gold and utensils. 19 And there was no more war until the thirty-fifth year of Asa's reign.
2 Chronicles 15.16-19: 16 He also removed Maacah, the mother of King Asa, from the position of queen mother, because she had made a horrid image as an Asherah, and Asa cut down her horrid image, crushed it and burned it at the brook Kidron. 17 But the high places were not removed from Israel; nevertheless Asa's heart was blameless all his days. 18 He brought into the house of God the dedicated things of his father and his own dedicated things: silver and gold and utensils. 19 And there was no more war until the thirty-fifth year of Asa's reign.
It looks like the Chronicler (or a later scribe) has attempted to smooth over the contradiction by specifying that Asa did not remove the high places from Israel, but that is rather an unnecessary thing to say, given that Asa was not king of Israel. The result, then, is an awkward tension between two different parts of Chronicles, one resulting from the author having used 1 Kings (or something very much like it) as a source.
Jehoshaphat and the High Places
Same basic thing with Jehoshaphat:
2 Chronicles 17.1-9: 1 Jehoshaphat his son then became king in his place, and made his position over Israel firm. 2 He placed troops in all the fortified cities of Judah, and set garrisons in the land of Judah and in the cities of Ephraim which Asa his father had captured. 3 The Lord was with Jehoshaphat because he followed the example of his father David's earlier days and did not seek the Baals, 4 but sought the God of his father, followed His commandments, and did not act as Israel did. 5 So the Lord established the kingdom in his control, and all Judah brought tribute to Jehoshaphat, and he had great riches and honor. 6 He took great pride in the ways of the Lord and again removed the high places and the Asherim from Judah. 7 Then in the third year of his reign he sent his officials, Ben-hail, Obadiah, Zechariah, Nethanel and Micaiah, to teach in the cities of Judah; 8 and with them the Levites, Shemaiah, Nethaniah, Zebadiah, Asahel, Shemiramoth, Jehonathan, Adonijah, Tobijah and Tobadonijah, the Levites; and with them Elishama and Jehoram, the priests. 9 They taught in Judah, having the book of the law of the Lord with them; and they went throughout all the cities of Judah and taught among the people.
So Jehoshaphat removed the high places from Judah. But... did he though?
1 Kings 22.41-44: 41 Now Jehoshaphat the son of Asa became king over Judah in the fourth year of Ahab king of Israel. 42 Jehoshaphat was thirty-five years old when he became king, and he reigned twenty-five years in Jerusalem. And his mother's name was Azubah the daughter of Shilhi. 43 He walked in all the way of Asa his father; he did not turn aside from it, doing right in the sight of the Lord. However, the high places were not taken away; the people still sacrificed and burnt incense on the high places. 44 Jehoshaphat also made peace with the king of Israel.
2 Chronicles 20.31-33: 31 Now Jehoshaphat reigned over Judah. He was thirty-five years old when he became king, and he reigned in Jerusalem twenty-five years. And his mother's name was Azubah the daughter of Shilhi. 32 He walked in the way of his father Asa and did not depart from it, doing right in the sight of the Lord. 33 The high places, however, were not removed; the people had not yet directed their hearts to the God of their fathers.
2 Chronicles 20.31-33: 31 Now Jehoshaphat reigned over Judah. He was thirty-five years old when he became king, and he reigned in Jerusalem twenty-five years. And his mother's name was Azubah the daughter of Shilhi. 32 He walked in the way of his father Asa and did not depart from it, doing right in the sight of the Lord. 33 The high places, however, were not removed; the people had not yet directed their hearts to the God of their fathers.
The Mother of Abijah
This case is more complicated, but it still seems obvious that at the root of the discrepancy lies the use of sources, probably sources of a genealogical nature in this case:
1 Kings 15.1: 1 Now in the eighteenth year of King Jeroboam, the son of Nebat, Abijam became king over Judah. 2 He reigned three years in Jerusalem; and his mother's name was Maacah [מַעֲכָה] the daughter of Abishalom [אֲבִישָׁלוֹם].
2 Chronicles 11.18-21: 18 Then Rehoboam took as a wife Mahalath the daughter of Jerimoth the son of David and of Abihail the daughter of Eliab the son of Jesse, 19 and she bore him sons: Jeush, Shemariah, and Zaham. 20 And after her he took Maacah [מַעֲכָה] the daughter of Absalom [אַבְשָׁלוֹם], and she bore him Abijah, Attai, Ziza, and Shelomith. 21 And Rehoboam loved Maacah the daughter of Absalom more than all his other wives and concubines. For he had taken eighteen wives and sixty concubines and fathered twenty-eight sons and sixty daughters.
2 Chronicles 11.18-21: 18 Then Rehoboam took as a wife Mahalath the daughter of Jerimoth the son of David and of Abihail the daughter of Eliab the son of Jesse, 19 and she bore him sons: Jeush, Shemariah, and Zaham. 20 And after her he took Maacah [מַעֲכָה] the daughter of Absalom [אַבְשָׁלוֹם], and she bore him Abijah, Attai, Ziza, and Shelomith. 21 And Rehoboam loved Maacah the daughter of Absalom more than all his other wives and concubines. For he had taken eighteen wives and sixty concubines and fathered twenty-eight sons and sixty daughters.
So far so good. But elsewhere, at a spot at which the Chronicler is actually following along with 1 Kings 15.1 (above) pretty closely, Abijah has a different mother!
2 Chronicles 13.1-2: 1 In the eighteenth year of King Jeroboam, Abijah became king over Judah. 2 He reigned three years in Jerusalem; and his mother's name was Micaiah [מִיכָיָהוּ] the daughter of Uriel [אוּרִיאֵל)] of Gibeah. And there was war between Abijah and Jeroboam.
The complication, of course, is that where the Chronicler is following 1 Kings closely he disagrees on the identity of this woman, and where he is not following 1 Kings he agrees. This is why I suspect that genealogical sources are at issue here. There may also be some confusion going on with Asa's mother:
1 Kings 15.9-10: 9 So in the twentieth year of Jeroboam the king of Israel, Asa began to reign as king of Judah. 10 And he reigned forty-one years in Jerusalem; and his mother's name was Maacah [מַעֲכָה] the daughter of Abishalom [אֲבִישָׁלוֹם].
However one slices it, though, the fact remains that the Chronicler contradicts himself, and the use of sources seems to be at least part of the reason.