At any time so fixed by the court for the defendant to appear on due date of installment or to appear for examination to determine change of condition set out in Rule 8.5, and the defendant fails to appear, he/she may be incarcerated to satisfy the fine and/or costs. In addition, if the defendant fails to pay fine and/or costs in accordance with the court's order, and the court determines the failure to pay was willful in accordance with Rules 8.1, 8.2, 8.3 and 8.4, the defendant may be incarcerated to satisfy the fine and/or costs.
Okla. Stat. tit. 22, § 8.6