Code of Colorado Regulations
1000 - Department of Public Health and Environment
1001 - Air Quality Control Commission
5 CCR 1001-13 - REGULATION NUMBER 11 MOTOR VEHICLE EMISSIONS INSPECTION PROGRAM
Part C - Inspection Procedures and Requirements for Exhaust Emissions, Fuel Evaporation Control, Visible Smoke Emissions, Emissions Control Systems, On-Board Diagnostics (OBD); and Practices to Ensure Proper Emissions Related Adjustments and Repairs
Section 5 CCR 1001-13-C-III - EMISSIONS CONTROL SYSTEMS INSPECTION PROCEDURES
Current through Register Vol. 48, No. 6, March 25, 2025
Motor vehicles shall be configured as required for sale or use within the United States pursuant to 40 CFR, Part 86, Subpart B; unless specific documentation in the form of a state issued vehicle evaluation form (DR2365) or an EPA (EPA form 3520) or DOT exemption is submitted.
III.A. Repealed
III.B. An assessment of the emissions control system Malfunction Indicator Lamp (MIL) performance shall be conducted by the emissions mechanic or emissions inspector on those vehicles subject to an On-Board Diagnostic Test.
For those vehicles that receive an On-Board Diagnostic Test, the following procedure will be performed to assess the integrity of the system:
- Ignition Off, Engine Off = indicator(s) off
- Ignition On, Engine Off = indicator(s) on or displayed
- Ignition On, Engine Running = indicator(s) off
The failure of the system to respond as described shall be reported to the motorist, and be used to fail the vehicle.
III.C. The repair/replacement of catalytic converters must incorporate the same type, style and location on the exhaust system relative to engine as originally designed by the vehicle manufacturer. If a new original equipment manufacturer (OEM) part is not used, only a California "accepted" after-market component appropriate to that application may be used.
III.D. If the necessary part(s) will not be available prior to the month of expiration of the present vehicle registration, and the owner obtains a signed form or statement to that effect from a manufacturer's dealer for that make vehicle, or from an automotive parts supplier which in the normal course of business supplies part(s) for that vehicle, Department of Revenue personnel after verification may issue a temporary Certification of Emissions Control. The form or statement provided must specifically identify by part numbers and description, the necessary part(s). The owner then has until the expiration of the temporary certification to complete the necessary repairs or replacement.
