What problems can be caused by scar adhesions?

Several. The most common problem with postsurgeryu adhesions is pain. Some surgeons do not feel that adhesions cause pain but frequently freeing up adhesions from prior surgery can reduce pain at the site. Adhesions in the abdomen can trap bowel leading to obstruction, & scars around a woman's fallopian tubes may prevent pregnancy from occurring.
Only, if painful. Adhesions form from surgery whereby intra-abdominal structures "stick to each other" like a crackerjack box with moisture in it. Unless, there is severe pain or movement is restricted, then undergoing another surgical procedure "to check for adhesions" can sometimes only cause more adhesions.