Page 244 - The Central Motor Vehicles Rules, 1989

216 THE CENTRAL MOTOR VEHICLES RULES, 1989 RULE 115

The On-Board Diagnostic (OBD) systems for emission control shall be as specified
in the below Tables:—
1
[TABLE 1
OBD FUNCTIONS AND ASSOCIATE
Vehicles manufactured on or after the 1st April, 2020, shall be required to comply
with the following OBD Stage I (BS VI) requirements/standards/compliances as per
AIS 137:—
Sr. No. Monitoring Items.
1. Circuit continuity for all emission related power train component.
2. Distance travelled since MIL (Malfunction indicator lamp) ON.

3. Electrical disconnection of Electronic evaporative purge control device.
TABLE 2
OBD FUNCTIONS AND ASSOCIATE
Vehicles manufactured on or after the 1st April, 2023, shall be required to comply
with the following OBD Stage II-A (BS VI) requirements/standards/compliances as per
AIS 137:—
Sr. No. Monitoring Items

1. Circuit continuity for all emission related power train component.
2. Circuit Rationality.
3. Distance travelled since MIL (Malfunction indicator lamp) ON.
4. Electrical disconnection of Electronic evaporative purge control device.
5. EGR system monitoring.
6. Misfire Detection.
7. Oxygen sensor deterioration monitoring

8. NOx after treatment system monitoring.
9. Particulate filter monitoring.
10. Particulate Matter (PM) Emission monitoring.
11. On-Board Diagnostics (OBD) Emission Threshold Limits.

TABLE 3
OBD FUNCTIONS AND ASSOCIATE
Vehicles manufactured on or after the 1st April, 2025, shall be required to comply
with the following OBD Stage II-B (BS VI) requirements/standards/compliances as per
AIS 137:—
Sr. No. Monitoring Items
1. Circuit continuity for all emission related power train component.

1 Substituted vide GSR 809(E), dt. 9-11-2022, w.e.f. 10-11-2022.