1. (a) A manufacturer shall:

   1. (1) Review warranty claim records for each engine family, test group, vehicle family, or trailer family on a quarterly basis to determine and compile by cumulative total the number of claims made for emission-related components. The data compiled shall be based on all warranty claims, without any prescreening of data as to the validity of the claims. In the case of heavy-duty vehicles or engines, nationwide or California data for monitoring warranty claims may be used to determine compliance with section 2143 requirements.
   2. (2) Categorize warranty claims for each engine family, test group, vehicle family, or trailer family by the specific emission control component replaced or repaired.
   3. (3) On the basis of data obtained subsequent to the effective date of these regulations, file an emission warranty information report for each quarter when the cumulative number of unscreened warranty claims for a specific emission-related component or repair represent at least 1 percent or 25 (whichever is greater) of the vehicles, engines, or trailers of a California-certified engine family, test group, vehicle family, or trailer family.
   4. (4) In the case of 2024 and subsequent model year California-certified heavy-duty diesel and Otto-cycle engines, and heavy-duty vehicles, an emissions warranty information report must be submitted for each quarter when the cumulative number of unscreened warranty claims for a specific emission-related component or repair represents at least 1 percent or 12 (whichever is greater) of the vehicles or engines of a California-certified engine family or test group.

2. (b) The emission warranty information report shall contain the following information in substantially the format outlined below:

   1. (1) The manufacturer's corporate name.
   2. (2) A description of each class or category of California-certified vehicles, engines, or trailers affected by a warranty replacement or warranty repair of a specific emission-related component, including model year and engine family, test group, vehicle family, or trailer family.
   3. (3) The number and percentage of vehicles, engines, or trailers in each engine family, test group, vehicle family, or trailer family for which a warranty replacement or warranty repair of a specific emission-related component was identified.
   4. (4) A short description of the specific emission-related component that was replaced or repaired under warranty.
3. (c) Emission warranty information reports shall be submitted not more than 25 days after the close of a calendar quarter. Subsequent to the filing of an emission warranty information report, a manufacturer shall submit quarterly reports updating the number and percentage of emission-related warranty claims with the most recent information, unless a recall has been implemented. Emission warranty information reports and updates shall be submitted to the Chief, Emissions Certification and Compliance Division, 4001 Iowa Ave, Riverside, CA 92507.
4. (d) The records described in section 2144(a)(1) of these procedures and the records used under the alternative procedure described in section 2142(a) of these procedures shall be made available to the Executive Officer upon request.
5. (e) In the case of 2024 and subsequent model year California-certified heavy-duty diesel and Otto-cycle engines, and heavy-duty vehicles, manufacturers must submit emission warranty information reports updating the number and percentage of emission-related warranty claims for components that were issued extended warranties throughout the extended warranty period, or, for components that were recalled, throughout the useful life period.

Unless and until a court of competent jurisdiction issues a final ruling that H.J. Res. 88 (119th Congress) and H.J. Res. 89 (119th Congress) are invalid or that the waivers U.S. EPA granted California on January 6, 2025, 90 Federal Register 642 and 90 Federal Register 643, are in effect, regulated parties may choose to follow either this section 2144 or section 2144.0.1.

However, if a court of competent jurisdiction issues a final ruling that H.J. Res. 88 (119th Congress) and H.J. Res. 89 (119th Congress) are invalid or that the waivers U.S. EPA granted California on January 6, 2025, 90 Federal Register 642 and 90 Federal Register 643, are in effect, the regulated parties are subject to the requirements of this section 2144 to the extent consistent with the court's final ruling. Notice of the court's ruling will be posted on CARB's website, https://arb.ca.gov.

Note: Authority cited: Sections 38501, 38505, 38510, 38560, 39500, 39600, 39601, 43000.5, 43013, 43018, 43105, 43204, 43205.5 and 43214 Health and Safety Code. Reference: Sections 38501, 38505, 38510, 38560, 43000, 43009.5, 43018, 43101, 43104, 43105, 43106, 43107 and 43204-43205.5, Health and Safety Code.

History

1. New section filed 1-24-90; operative 2-23-90 (Register 90, No. 8).

2. Amendment of subsections (a)(1)-(3), (b)(2), (b)(3) and (c) filed 10-28-99; operative 11-27-99 (Register 99, No. 44).

3. Amendment of section and Note filed 12-22-2021; operative 4-1-2022 (Register 2021, No. 52). Transmission deadline specified in Government Code section 11346.4(b) extended 60 calendar days pursuant to Executive Order N-40-20. Filing deadline specified in Government Code section 11349.3(a) extended 60 calendar days pursuant to Executive Order N-40-20 and an additional 60 calendar days pursuant to Executive Order N-71-20.

4. New first and second paragraphs filed 10-2-2025 as an emergency; operative 10-2-2025 (Register 2025, No. 40). A Certificate of Compliance must be transmitted to OAL by 4-1-2026 or emergency language will be repealed by operation of law on the following day.

5. New first and second paragraphs refiled 3-26-2026 as an emergency; operative 4-1-2026 (Register 2026, No. 13). A Certificate of Compliance must be transmitted to OAL by 6-30-2026 or emergency language will be repealed by operation of law on the following day.