1. Member States shall ensure that all statutory auditors and audit firms are subject to principles of professional ethics, covering at least their public-interest function, their integrity and objectivity and their professional competence and due care.
2. In order to ensure confidence in the audit function and to ensure uniform application of paragraph 1 of this Article, the Commission may, in accordance with the procedure referred to in Article 48(2), adopt principle-based implementing measures governing professional ethics.