{
  "url": "https://openlegislation.uk/eu-regulation-2017-654/annex-IV/division-1/division-1.1",
  "json_url": "https://openlegislation.uk/eu-regulation-2017-654/annex-IV/division-1/division-1.1.json",
  "legislation": "eur/2017/654",
  "legislation_title": "Commission Delegated Regulation (EU) 2017/654 of 19 December 2016 supplementing Regulation (EU) 2016/1628 of the European Parliament and of the Council with regard to technical and general requirements relating to emission limits and type-approval for internal combustion engines for non-road mobile machinery",
  "legislation_url": "https://openlegislation.uk/eu-regulation-2017-654",
  "path": "annex/IV/division/1/division/1.1",
  "kind": "division",
  "number": "1.1",
  "heading": null,
  "text": "For the purposes of this Annex, the following definitions and abbreviations apply:\n(1) ‘diagnostic trouble code (“DTC”)’ means a numeric or alphanumeric identifier which identifies or labels a NCM and/ PCM;\n(2) ‘confirmed and active DTC’ means a DTC that is stored during the time the NCD and/or PCD system concludes that a malfunction exists;\n(3) ‘NCD engine family’ means a manufacturer's grouping of engines having common methods of monitoring/diagnosing NCMs;\n(4) ‘NOx Control Diagnostic system (NCD)’ means a system on-board the engine which has the capability of\n(a) detecting a NOx Control Malfunction,\n(b) identifying the likely cause of NOx control malfunctions by means of information stored in computer memory and/or communicating that information off-board;\n(5) ‘NOx Control Malfunction (NCM)’ means an attempt to tamper with the NOx control system of an engine or a malfunction affecting that system that might be due to tampering, that is considered by this Regulation as requiring the activation of a warning or an inducement system once detected;\n(6) ‘Particulate Control Diagnostic system (PCD)’ means a system on-board the engine which has a capability of:\n(a) detecting a Particulate Control Malfunction,\n(b) identifying the likely cause of particulate control malfunctions by means of information stored in computer memory and/or communicating that information off-board;\n(7) ‘Particulate Control Malfunction (PCM)’ means an attempt to tamper with the particulate after-treatment system of an engine or a malfunction affecting the particulate after-treatment system that might be due to tampering, that is considered by this Regulation as requiring the activation of a warning once detected;\n(8) ‘PCD engine family’ means a manufacturer's grouping of engines having common methods of monitoring/diagnosing PCMs;\n(9) ‘Scan-tool’ means an external test equipment used for off-board communication with the NCD and/or PCD system.",
  "extent": "E+W+S+N.I.",
  "status": null,
  "version": "current",
  "annotations": [],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/eur/2017/654/annex/IV/division/1/division/1.1",
    "retrieved_at": "2026-11-01T14:45:01.864924+00:00"
  },
  "licence": "Open Government Licence v3.0",
  "licence_url": "https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/",
  "attribution": "Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives."
}