How does Oedipus show weakness of character in Oedipus Rex?

shows weakness in
several areas. His(conceited pride) is discussed in the answer above and can be seen as his
tragic flaw and most significant weakness. However, Oedipus shows weakness elsewhere as
well. 

In dealing with , Oedipus acts unreasonably and is unable to control
his anger. Paranoia, anger and impatience all propel Oedipus into a rash conclusion.

Oedipus feels threatened by Creon and believes that he covets the
throne...

When others, like ,and Creon attempt to advise
restraint, Oedipus grows impatient and angry with them. This lack of self-control is a
weakness. 

Oedipus is desparate to know the truth about his situation. His
emotion overwhelms his reason, leading to self-control issues, paranoia and
anger.