Proposal to introduce an amendment to documents GRPE/2013/8 and GRPE-66-10 that would permit the manufacturer to request a temporary disablement of OBD monitors at low ambient temperature in the same manner as permitted at high ambient temperatures (above 35°C).
39. The expert from OICA presented GRPE-66-35-Rev.1, introducing the possibility to temporarily disable the OBD system for very low temperatures (first suggesting -18°C as a threshold, and later agreeing to use -22°C), arguing that only a fraction of vehicle km are run in these conditions and that the accuracy of the OBD devices is hampered at very low temperatures. Notwithstanding the need to ensure that the regulation of pollutant emission needs to be enforced also in the coldest regions and cities, the expert from Sweden accepted the proposal with a -22°C threshold. The expert from Norway supported the Swedish statement. The expert from the EC also supported the Swedish position, underlining that the deactivation shall be limited to the period of time during which the temperatures remain below the deactivation threshold.
40. GRPE adopted ECE/TRANS/WP.29/GRPE/2013/7, as amended by GRPE-66-25, and ECE/TRANS/WP.29/GRPE/2013/8, as amended by GRPE-66-10 and GRPE-66-35-Rev.1. GRPE requested the secretariat to submit the resulting proposals to WP.29 and AC.1, for consideration at their November 2013 sessions, respectively as Supplement 6 to the 05 series of amendments to Regulation No. 49 and Supplement 2 to the 06 series of amendments to Regulation No. 49.
| GRPE-66-35/Rev.1 |