I've struggled with this for years. Decades, in fact. I think it has more to do with gender than type. Therapy should help if you can get him there and get him to engage. Chances are, he will see it as another attack.

My husband finally began to see things from my perspective in his middle 50s and still tends to pout and give the cold shoulder when he should be apologizing or at least talking. I have to phrase things pretty forcefully for him to take me seriously. He will apologize if he sees that I'm really hurt, but I'm usually the one who apologizes, when I don't think I've done anything wrong.

BTW, I'm xNFP and he's ISFP. That's right. He's a typically conflict avoidant, overly accommodating, quick to apologize, can't say no ISFP, and somehow can't say yes or I'm sorry to the most important person in his life.

I think he can learn, but only if you are willing to put in massive amounts of time and energy to make it happen. Good luck to you.