Every contract or duty within this chapter imposes an obligation of good faith in its performance and enforcement.
HRS § 490:1-304
Where the court predicted that the Hawaii supreme court would interpret § 490:1-203 (and this section, its successor) to preclude an independent cause of action for failure to perform or enforce a warranty in good faith, plaintiff's claim for breach of the implied covenant of good faith and fair dealing dismissed. 459 F. Supp. 2d 1028.