The short answer is no. The long answer is that generally speaking left-turning vehicles must yield the right of way to oncoming vehicles. However, that doesn’t mean they are automatically at fault and every accident must be examined on it’s own facts and a determination made as to who “caused” the collision.
There is a common misunderstanding that if you were making a left turn you are automatically at fault for the accident. However, liability will depend on the right of way, the speed of the vehicles, the duties of each driver, and what a reasonable and prudent driver would have done in the same situation.
The Left-Hand Turn Rules in Nova Scotia