Page 250 - The Central Motor Vehicles Rules, 1989

222 THE CENTRAL MOTOR VEHICLES RULES, 1989 RULE 115
1
[14. The CNG/Bio-CNG/HCNG vehicles shall meet all the safety requirements
as per AIS 24 and AIS 28 (Revision 1), as applicable.
2
[15. The compatibility of vehicle to level of ethanol blend of E12 or E15 or E20
or E85 or E100 shall be defined by the vehicle manufacturer and the same
shall be displayed on vehicle by putting a clearly visible sticker;
16. For the bi-Fuel vehicles, the Reference Gasoline fuel shall be as per E5 or
E10 or E12 or E15 as declared by the manufacturer during approval.]]
(i) OBD I monitoring items for BS-VI vehicles manufactured on or after
1st April, 2020
TABLE 4
BS-VI: OBD I MONITORING ITEMS

Sr. No. Monitoring Items All Positive All
ignition Compression
vehicles ignition
vehicles
(1) (2) (3) (4)
(a) Oxygen (O2) sensor Ö —

(b) Secondary Air System, if provided Ö —
(c) Electronic fuel injection system — Ö
(d) Coolant temperature Ö Ö
(e) EGR, (Exhaust Gas Recirculation), if provided Ö Ö
(f) Emission Control systems/components Ö Ö
(Comprehensive Components)
(g) Circuit continuity for all emission related power train Ö Ö
components
(h) Distance travelled since MIL (Malfunction Indicator Ö Ö
Lamp) ON
(ii) OBD Stage II-A Thresholds for BS-VI vehicles manufactured on or after
1st April, 2023:
TABLE-5A
BS-VI: OBD STAGE II-A: EMISSION THRESHOLDS
Sr. Engine Type CO (mg/km) THC NOX
No. (mg/km) (mg/km)
(1) (2) (3) (4) (5)
(a) Positive Ignition (PI) 2170 1400 350
(b) Compression Ignition (CI) 2170 630 900

1 Inserted vide GSR 156(E), dt. 8-3-2021, w.e.f. 8-3-2021.
2 Substituted vide GSR 728(E), dt. 11-10-2021, w.e.f. 12-10-2021.