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Commission Directive 2005/78/EC of 14 November 2005 implementing Directive 2005/55/EC of the European Parliament and of the Council on the approximation of the laws of the Member States relating to the measures to be taken against the emission of gaseous and particulate pollutants from compression-ignition engines for use in vehicles, and the emission of gaseous pollutants from positive ignition engines fuelled with natural gas or liquefied petroleum gas for use in vehicles and amending Annexes I, II, III, IV and VI thereto (Text with EEA relevance) · European Union

The following section 8.3 is added: ‘8.3. Parameters for defining an OBD-engine family The OBD-engine family may be defined by basic design parameters that must be common to engine systems within the family. In order that engine systems may be considered to belong to the same OBD-engine family, the following list of basic parameters must be common, unless these methods have been shown as equivalent by the manufacturer by means of relevant engineering demonstration or other appropriate procedures. Note: engines that do not belong to the same engine family may still belong to the same OBD-engine family provided the above mentioned criteria are satisfied.’ the methods of OBD monitoring, the methods of malfunction detection.

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Source: EUR-Lex (Cellar) · retrieved 2026-11-10 · Text as adopted (Official Journal); later amendments are not incorporated in this text.