California Code, Civil Code - CIV § 1799.102

(a) A cosigner who suffers a loss as a result of a violation of Section 1799.101 may bring an action to recover actual damages or two hundred fifty dollars ($250), whichever is greater, and reasonable attorney fees.

(b) The cosigner shall, not less than 30 days prior to bringing an action pursuant to subdivision (a), notify the person alleged to have violated Section 1799.101 of the cosigner's intention to bring an action. The notice shall include a statement of the specific evidence that proves the loss suffered by the cosigner. If within 25 days after the date of receiving the notice, the person alleged to have violated Section 1799.101 tenders to the cosigner an amount equal to the loss, or otherwise resolves the matter to the cosigner's satisfaction, the cosigner shall be barred from further recovery of that loss, including reasonable attorney fees.

(c) This section shall become operative on July 1, 1992.