Article 1664. Nature of the Surety’s Liability
(1) If no maximum amount of the suretyship is stipulated, whether a global suretyship or not, it is considered that the surety’s obligation is limited to the maximum amount of the principal secured obligation at the time the suretyship is assumed. Such a suretyship will cover interest, commissions, damages (including penalties), and any expenses related to the principal secured obligation only if expressly stipulated.
(2) The surety’s obligation is presumed to be subsidiary, in the sense of Article 1641, unless expressly stipulated otherwise.