Requirements for type-approval regarding the OBD system
Article 4
1. The manufacturer shall ensure that all vehicles are equipped with an OBD system. 2. The OBD system shall be designed, constructed and installed on a vehicle so as to enable it to identify types of deterioration or malfunction over the entire life of the vehicle. 3. The OBD system shall comply with the requirements of this Regulation during normal conditions of use. 4. When tested with a defective component in accordance with Appendix 1 of Annex XI, the OBD system malfunction indicator shall be activated. The OBD system malfunction indicator may also activate during this test at levels of emissions below the OBD thresholds limits specified in section 2.3 of Annex XI. 5. The manufacturer shall ensure that the OBD system complies with the requirements for in-use performance set out in section 3 of Appendix 1 to Annex XI of this Regulation under all reasonably foreseeable driving conditions. 6. In-use performance related data to be stored and reported by a vehicle's OBD system according to the provisions of Section 7.6 of Appendix 1 to Annex XI of UN/ECE Regulation No 83 shall be made readily available by the manufacturer to national authorities and independent operators without any encryption.