California Code of Regulations
Title 13 - Motor Vehicles
Division 3 - Air Resources Board
Chapter 3 - Highway and Mandatory Inspection Emission Standards
Article 1 - General Provisions
Section 2176 - Mandatory Inspection Exhaust Emissions-Light-Duty and Medium-Duty Vehicles
Current through Register 2024 Notice Reg. No. 38, September 20, 2024
(a) Pursuant to Section 43010, Chapter 1, Part 5, Division 26 of the Health and Safety Code, exhaust emissions from light-duty (6,000 pounds or less gross vehicle weight) and medium-duty (8,500 pounds or less gross vehicle weight) gasoline-powered vehicles subject to inspection pursuant to Chapter 20.4 (commencing with Section 9889.50) of Division 3 of the Business and Professions Code shall not exceed the standards set forth in this section by vehicle class as shown in Table 1.
(b) The inspection shall consist of exhaust emission measurements from the vehicle with the air injection system (if any) connected. Hydrocarbon, carbon monoxide, and oxides of nitrogen concentrations shall be determined by non-dispersive infrared instrumentation.
The cruise mode test shall be performed first on a chassis dynamometer at the speeds and loads shown in the following table:
| Loading Class | Number of Cylinders | Vehicle Shipping Weight | Speed (mph) | Loading (Hp) |
| 1 | 4 or less | -- | 4 ± 1 | 10 ± 1 |
| 2 | 5 or 6 | -- | 40 ± 1 | 15 ± 1.5 |
| 3 | 7 or more | less than 3,250 lbs. | 40 ± 1 | 17.5 ± 1.5 |
| 4 | 7 or more | 3,250 lbs. or more | 40 ± 1 | 20 ± 1.5 |
A vehicle which cannot reach the speed and load specified in the table above, or which by its original design cannot be tested at cruise on an inspection center dynamometer, may be exempted from the cruise mode of the test. Vehicles owned by licensed fleet operators may be exempted from cruise mode test, provided an underhood functional inspection is performed on these vehicles, in addition to idle mode test. An idle mode test may be performed on vehicles at one lane inspection centers wherever dynamometers are inoperative.
The idle mode test shall be performed with the transmission set in neutral gear with the engine at its normal operating temperature. The cruise mode test shall be performed with automatic transmission in drive and with manual transmission set in high gear but overdrive will be disengaged.
(c) In the event of a conflict between the emission standards set forth in subdivision (a) and a manufacturer's specifications for a particular engine family or group of vehicles (defined by make, model year, and emission control system), as demonstrated by an excessive failure rate, by valid assembly-line data of the vehicle manufacturer, or by other data available to the executive officer, the executive officer may by Executive Order exempt such engine families or groups of vehicles from the standards set forth in subdivision (a) and set appropriate separate emission standards.
Table 1
Two Mode MVIP Standards
|
Emission | Idle Standards* |
40 MPH Cruise Standards* |
|||||||
|
Category Number |
Model Year |
Control System |
No. of Cylinders |
HC PPM |
CO % |
HC PPM |
CO % |
NOx** PPM |
|
| 1 | 1955-1965 | 5 or more | 800 | 8.50 | 400 | 6.50 | NO STD | ||
| 2 | 1966-1970 | with air injection | 5 or more | 450 | 5.00 | 350 | 4.00 | 2400 | |
| 3 | 1966-1970 | without air injection | 5 or more | 550 | 7.00 | 350 | 4.50 | 3000 | |
| 4 | 1971-1972 | with air injection | 5 or more | 300 | 4.00 | 200 | 2.00 | 2200 | |
| 5 | 1971-1972 | without air injection | 5 or more | 450 | 6.50 | 250 | 3.00 | 3200 | |
| 6 | 1973-1974 | with air injection | 5 or more | 200 | 3.50 | 150 | 2.00 | 1700 | |
| 7 | 1973-1974 | without air injection | 5 or more | 400 | 6.50 | 250 | 2.50 | 2600 | |
| 8 | 1955-1967 | 4 or less | 1200 | 8.00 | 400 | 6.50 | NO STD | ||
| 9 | 1968-1970 | with air injection | 4 or less | 400 | 5.50 | 300 | 4.50 | 3200 | |
| 10 | 1968-1970 | without air injection | 4 or less | 900 | 7.50 | 300 | 6.00 | 3000 | |
| 11 | 1971-1972 | with air injection | 4 or less | 400 | 5.50 | 300 | 4.00 | 3000 | |
| 12 | 1971-1972 | without air injection | 4 or less | 400 | 6.50 | 300 | 5.00 | 3400 | |
| 13 | 1973-1974 | with air injection | 4 or less | 300 | 4.50 | 250 | 4.00 | 1700 | |
| 14 | 1973-1974 | without air injection | 4 or less | 350 | 6.50 | 250 | 4.00 | 2600 | |
| 15 | 1975 + | no catalyst | ALL | 150 | 3.00 | 150 | 1.50 | 2100 | |
| 16 | 1975 + | catalyst without air injection | ALL | 200 | 4.00 | 150 | 1.50 | 2200 | |
| 17 | 1975 + | catalyst with air injection | ALL | 100 | 1.00 | 100 | 1.00 | 1500 | |
| 18 | 1975 + | three-way catalyst | ALL | 80 | 1.00 | 80 | 1.00 | 1000 | |
| __________ | |||||||||
| * HC (ppm) is defined as hydrocarbons in parts per million of hexane by volume, CO (%) is defined as carbon monoxide in percent by volume, and NOx (ppm) is defined as oxides of nitrogen in parts per million in nitric oxide by volume. | |||||||||
1. New
section filed 9-18-74; effective thirtieth day thereafter (Register 74, No.
38).
2. Amendment filed 3-4-75; effective thirtieth day thereafter
(Register 75, No. 10).
3. Amendment filed 3-16-79 as an emergency;
designated effective 3-16-79. Certificate of Compliance included (Register 79,
No. 11).
4. Amendment of typographical error in subsection (a) of
3-16-79 emergency order; filed 4-11-79 as procedural and organizational;
effective upon filing (Register 79, No. 15).
5. Editorial correction
of History Note 4 (Register 79, No. 18).
6. Amendment of subsection
(c) filed 9-20-79 as an emergency; effective upon filing (Register 79, No. 38).
Certificate of Compliance included.
7. Amendment filed 5-8-80;
designated effective 7-1-80 (Register 80, No. 19).
8. Repealer and
new section filed 6-19-81; effective thirtieth day thereafter (Register 81, No.
25).
9. Editorial correction of subsection (b) (Register 81, No.
31).
10. Editorial correction of Table 1 (Register 82, No.
4).
11. Amendment 11-30-83; effective thirtieth day thereafter
(Register 83, No. 49).
Note: Authority cited: Sections 39600, 39601 and 43010, Health and Safety Code; and Sections 9889.50 and 9889.51, Business and Professions Code. Reference: Sections 39002, 39003, 39500, 43000, 43013 and 43600, Health and Safety Code; and Section 9889.50, Business and Professions Code.
