Last year, the actor and radio host pleaded guilty after he was charged with drink-driving.
In March he was sentenced to 80 hours community work, 12 months supervision and was disqualified from driving for 13 months.
Last month, he appeared before the courts again, charged with driving a vehicle contrary to his limited licence terms on August 1 along State Highway 16.
Magasiva has not appeared regularly on Shortland Street since May, when his character Vinnie moved to Singapore.
In a statement, South Pacific Pictures confirmed Magasiva has "taken a break from the role as Vinnie on Shortland Street to focus on other projects".
Flava is owned by NZME, which owns and publishes the NZ Herald.