The previous owners of the house inexplicably cut the water line to the fridge, so I reconnected it only to find out that the ice maker would keep leaking water. That was happening because the solenoid valve that allows flow to the ice maker wasn't closing properly. Fortunately, it was an easy replacement, just a couple of screws and push connections.
Been down this path before. The water pump on my fridge wasn't pushing through with hardly any water pressure. Replaced it, felt hella accomplished.
I think the worry is buying parts when it could be a couple of different things going wrong. Taking the time/money to do it and then find out it's the other part is just infuriating. Maybe that's just me.
Not just you. I Always worry when it comes to my washing machine. One error code means it could be 3 things. There are two PC boards and both are $150-300/piece. I bought the one that other forums told me was usually the culprit and prayed after paying. Luckily it was.
Yeah, I almost pulled the trigger on a new ice maker assembly, because that's what was apparently leaking. Fortunately, I gave it some more thought and was able to use my smartphone camera to observe that water kept trickling into the ice maker from the spout in the back of the freezer, even when the ice maker was supposed to be disabled. So, the ice maker wasn't leaking. It was just overflowing. Water was leaking through the ice maker solenoid valve when it was supposed to be closed, so that's what needed to be replaced.
Of course, this older refrigerator is a dumb appliance, so this sort of troubleshooting and repair is within my grasp. I don't know how I'd fair with a newer smart fridge.