Please stop googling
If you are really worried the best thing to do is call your care provider/hospital and they can scan your scar.

Yes it is possible.
I had a partial dehiscence at 24 weeks. I delivered (via section) at 39. I had no symptoms except some PV bleeding. They scanned my scar and could see 'something', but it was a small base hospital and I wasn't diagnosed. I was sent home on bed rest. Thank goodness. He was moving and grooving the whole time. The possibility of this happening is minute.

It's not all doom and gloom.
I also had my scar checked regularly with DD2's pregnancy. Any good tertiary scan place should be able to do it.