Document ID: chunk:federal_register_of_legislation:F2023C00229:reg:110:p51
Version: federal_register_of_legislation:F2023C00229
Segment Type: reg
Provision Reference: reg 110 (pt 51/59)
Character Range: 747916–750931

to all owners of new heavy-duty vehicles or new heavy-duty engines written instructions that shall state that if the vehicle emission control system is not functioning correctly, the driver shall be informed of a problem by the malfunction indicator (MI) and the engine shall consequentially operate with a reduced performance.

              6.5.2.2.        The instructions will indicate requirements for the proper use and maintenance of vehicles, including where relevant the use of consumable reagents.

              6.5.2.3.        The instructions shall be written in clear and non-technical language and in the language of the country in which a new heavy-duty vehicle or new heavy-duty engine is sold or registered.

              6.5.2.4.        The instructions shall specify if consumable reagents have to be refilled by the vehicle operator between normal maintenance intervals and shall indicate a likely rate of reagent consumption according to the type of new heavy-duty vehicle.

              6.5.2.5.        The instructions shall specify that use of and refilling of a required reagent of the correct specifications when indicated is mandatory for the vehicle to comply with the certificate of conformity issued for that vehicle or engine type.

              6.5.2.6.        The instructions shall state that it may be a criminal offence to use a vehicle that does not consume any reagent if it is required for the reduction of pollutant emissions and that, in consequence, any favourable conditions for the purchase or operation of the vehicle obtained in the country of registration or other country in which the vehicle is used may become invalid.

              6.5.3.            Engine system NOx control

              6.5.3.1.        Incorrect operation of the engine system with respect to NOx emissions control (for example due to lack of any required reagent, incorrect EGR flow or deactivation of EGR) shall be determined through monitoring of the NOx level by sensors positioned in the exhaust stream.

              6.5.3.2.        Any deviation in NOx level more than 1,5 g/kWh above the applicable limit value given in table 1 of section 6.2.1 of Annex I, shall result in the driver being informed by activation of the MI as referred to in section 3.6.5 of Annex IV to Directive 2005/78/EC.

              6.5.3.3.        In addition, a non-erasable fault code identifying the reason why NOx exceeds the levels specified in section 6.5.3.2 shall be stored in accordance with section 3.9.2 of Annex IV to Directive 2005/78/EC for at least 400 days or 9 600 hours of engine operation.

              The reasons for the NOx exceedance shall, at a minimum, and where applicable, be identified in the cases of empty reagent tank, interruption of reagent dosing activity, insufficient reagent quality, too low reagent consumption, incorrect EGR flow or deactivation of the EGR. In all other cases, the manufacturer is permitted to refer to a non-erasable fault code "high NOx — root