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ANNEX XU.K. ON-BOARD DIAGNOSTICS

3.PERFORMANCE REQUIREMENTSU.K.

3.1.The performance requirements shall be those set out in Section 5 of Annex 9B to UN/ECE Regulation No 49.U.K.

3.2. OBD threshold limits U.K.

3.2.1.The OBD threshold limits (hereinafter ‘OTLs’) applicable to the OBD system are those specified in the rows ‘general requirements’ of Table 1 for compression-ignition engines and of Table 2 for gas-fuelled engines and positive-ignition engines fitted to vehicles belonging to category M3, to N2 vehicles having a maximum permissible mass exceeding 7,5 tonnes, and to N3 vehicles.U.K.
3.2.2.Until the end of the phase-in period set out in Article 4(7), the OBD threshold limits specified in rows ‘phase-in period’ of Table 1 for compression-ignition engines and of Table 2 for gas fuelled engines and positive-ignition engines fitted to vehicles belonging to category M3, to N2 vehicles having a maximum permissible mass exceeding 7,5 tonnes and, to N3 vehicles shall apply.U.K.
Table 1

OTLs (Compression-ignition engines)

Limit in mg/kWh
NOxPM Mass
Phase-in period1 50025
General requirements1 20025
Table 2

OTLs (all gas fuelled engines and positive-ignition engines fitted to vehicles belonging to category M3, to N2 vehicles having a maximum permissible mass exceeding 7,5 tonnes, and to N3 vehicles)

a

The OTL for CO shall be set at a later stage.

Limit in mg/kWh
NOxCOa
phase-in period1 500
general requirements1 200