Jesus was capable of sinning

Chapter 48: Hebrews 1–6

President Howard W. Hunter (1907–95) taught, “It is important to remember that Jesus was capable of sinning, that he could have succumbed, that the plan of life and salvation could have been foiled, but that he remained true. Had there been no possibility of his yielding to the enticement of Satan, there would have been no real test, no genuine victory in the result. If he had been stripped of the faculty to sin, he would have been stripped of his very agency. It was he who had come to safeguard and ensure the agency of man. He had to retain the capacity and ability to sin had he willed so to do. As Paul wrote, ‘Though he were a Son, yet learned he obedience by the things which he suffered’ (Heb. 5:8); and he ‘was in all points tempted like as we are, yet without sin’ (Heb. 4:15). He was perfect and sinless, not because he had to be, but rather because he clearly and determinedly wanted to be” (“The Temptations of Christ,” Ensign, Nov. 1976, 19).

https://www.churchofjesuschrist.org/study/manual/new-testament-student-manual/hebrews/chapter-48-hebrews-1-6?id=p36#p36