John Gill Commentary 1 Kings 22:43

"And he walked in all the way of Asa his father; He turned not aside from it, doing that which was right in the eyes of Jehovah: howbeit the high places were not taken away; the people still sacrificed and burnt incense in the high places." — 1 Kings 22:43 (ASV)

And he walked in all the ways of Asa his father
Who was a good prince:

he turned not aside from doing that which was right in the eyes of the
Lord ;
in his moral conversation, religious worship, and civil government:

nevertheless, the high places were not taken away, for the people
offered and burnt incense yet in the high places ;
he took away the high places and groves for idolatrous worship, (2 Chronicles 17:6) , but not the high places in which sacrifices were offered to the Lord, which ought to have been, especially since the temple was built; and those in the tribes of Judah and Benjamin were altogether inexcusable, being near to the temple, and under no restraint, as those of the ten tribes were; but the people were fond of them, because of their antiquity, and it was difficult for religious princes to remove them, if inclined.