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The 44-year-old actor, who plays Nathan Petrelli in the hit show, was arrested in January after Los Angeles Police caught him swerving at high speeds across a freeway.
According to TMZ, Pasdar has been sentenced to 36 months probation and ordered to pay a $395 (£264) fine.
He will also need to attend an alcohol education programme and ten Alcoholics Anonymous meetings.
A second charge against Pasdar, for refusing to submit to a blood alcohol test, was dropped by prosecutors.
