Cal. CCP § 339

Within two years: 1. An action upon a contract, obligation or liability not founded upon an instrument of writing, except as provided in Section 2725 of the Commercial Code or subdivision 2 of Section 337 of this code; or an action founded upon a contract, obligation or liability, evidenced by a certificate, or abstract or guaranty of title of real property, or by a policy of title insurance; provided, that the cause of action upon a contract, obligation or liability evidenced by a certificate, or abstract or guaranty of title of real property or policy of title insurance shall not be deemed to have accrued until the discovery of the loss or damage suffered by the aggrieved party thereunder.

2. An action against a sheriff or coroner upon a liability incurred by the doing of an act in an official capacity and in virtue of office, or by the omission of an official duty including the nonpayment of money collected in the enforcement of a judgment.

3. An action based upon the rescission of a contract not in writing. The time begins to run from the date upon which the facts that entitle the aggrieved party to rescind occurred. Where the ground for rescission is fraud or mistake, the time does not begin to run until the discovery by the aggrieved party of the facts constituting the fraud or mistake.