anx_IV__para__75
4.1.3. In the case of both OBD 1 and OBD 2, the OBD system must indicate the lack of any required reagent necessary for the operation of an exhaust aftertreatment system.
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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.