Ariz. Rev. Stat. § 13-902
A. Unless terminated sooner, probation may continue for the following periods:
B. Notwithstanding subsection A of this section, unless terminated sooner, probation may continue for the following periods:
C. If the court has required, as a condition of probation, that the defendant make restitution for any economic loss related to the defendant's offense and that condition has not been satisfied, the court at any time before the termination or expiration of probation may extend the period within the following limits: