How much would it cost to get a knock sensor fixed for a 04 xterra, not able to pass inspection: Knock Sensor 1 Circuit High Input(Bank 1 or single sensor)

I was under the impression that you had to have the inspection in order to get the tag. However there is just the single sticker for the front window.

I'm pretty sure it will cost a lot when you take it to a dealer. But there's a place called euro-asia on Great Southwest who will fix it for little to nothing. Side note: I don't believe Texas requires vehicles to have inspections anymore just to get your registration. I just got mine last month it has an inspection fee on it