He was the son of Wartislaw IX of Pomerania-Wolgast and Sophia, daughter of Eric IV of Saxe-Lauenburg.

In August 1457, Eric was hunting in the forests near Horst, belonging not to his lands, but to the Hanseatic city of Greifswald.

Despite being a partitioned duchy in reality, Pomerania was granted to the dukes as one fief to be co-ruled, which meant that several issues had to be acted upon in common.

He pawned the area north of the Brandenburgian Uckermark to Hohenzollern margrave Frederick II and in return became assured of military protection against his brother.

The campaigns were ended by the Peace of Prenzlau of 31 May 1472 and the Pomeranian dukes gave the pledge of allegiance to the elector.

He was buried in Eldena Abbey near Greifswald and was succeeded by his son Bogislaw X. Eric II married Sophia of Pomerania-Stolp.