Answer:
The character flaw which Odysseus faced when he was speaking with the dead is FEAR. This could be seen in the excerpt in quote below:
When Odysseus first enters the Land of the Dead, he feels fearful. "From every side they came and sought the pit with rustling cries; and I grew sick with fear."
Because the dead souls were jumping out at him, that made Odysseus to grew fearful.
Step-by-step explanation: