This page last reviewed on June 6, 2016

What is E-Cert?

Manufacturers of motor vehicles and engines must show compliance with California emission requirements before their products are legal for sale, use, or registration in the State. To show compliance, manufacturers must apply to the Air Resources Board (ARB) for certification of their vehicles and engines. Traditionally, manufacturers have submitted these applications in paper format. They are reviewed by certification staff and stored at ARB. To improve the process for certification, ARB has introduced E-Cert, an electronic application submittal system. E-Cert loads files and allows for staff review of an application. Manufacturers receive an electronic notification when their application has been loaded into E-Cert.

Usage of E-Cert will be required for all manufacturers seeking certification of new motor vehicles and engines: passenger cars, light-duty trucks, medium-duty vehicles, on-road and off-road motorcycles, all terrain vehicles, heavy-duty engines and vehicles, off-road compression ignition engines, small off-road engines, large spark ignition engines, and spark-ignition marine engines.

Heavy Duty

  • A public workshop was held on Thursday November 6, 2008 to present new data requirements for heavy-duty diesel E-Cert certification applications. For more information please see the workshop notice.
  • ARB has started the process of designing Heavy-Duty E-Cert. The initial step involves gathering data requirements for the Heavy-Duty vehicle/engine category. Like other E-Cert categories, Heavy-Duty Diesel will be submitting certification applications through XML. The data requirements contains the information that Heavy-Duty manufacturers will need to supply for a certification application. As Heavy-Duty E-Cert development progresses, additional information will be posted on this page. Heavy-Duty Data Requirements (posted after the workshop)
    • This document describes the database fields in detail such as field names, description, data type, size, domain, and nullability.

Light Duty

The Light-Duty vehicle category is the next category being phased into E-Cert. ARB has developed a website for manufacturer's to submit XML formatted certification applications directly to E-Cert. The certification applications should be formatted using the Light-Duty Vehicle XML Schema.

  • Light-Duty Vehicle InfoPath Form updated icon
    • Based on the comments that ARB received during the workshop held on January 23, 2008, ARB created a user-friendly form for manufacturers to enter data. The form, which was created with Microsoft InfoPath 2003, will provide manufacturers with a means of entering and saving data as an XML file. The only requirement to use this form is that you must have Microsoft InfoPath 2003 or greater, which is part of Microsoft Office Professional Edition.
    • Last Updated: June 6, 2016
  • Light-Duty Vehicle Data Requirements new icon
    • This document describes the database's fields in detail. It contains information pertaining to a field's name, description, size, and domain.
    • Last Updated: June 6, 2016
  • Light-Duty Vehicle XML Schema updated icon
    • The XML schema is a guideline for describing how to form a valid XML document. Formatting the applications based on the schema will ensure that the applications will be processed by E-Cert. Applications not formatted correctly, will not be loaded into E-Cert.
    • The Light-Duty Vehicle XML schema changes are listed in the data requirements.
    • Last Updated: June 6, 2016
  • User Guides new icon
    • These user guides illustrate which fields are required for each vehicle fuel category and operating fuel combinations. The ZIP file includes the PDF user guides and the XML files which were used to create them.
    • Last Updated: June 6, 2016
  • E-Cert Business Rules new icon
    • This document details rules regarding: manufacturer and user registration, XML file submissions, and the E-Cert Application Loader website.
    • Last Updated: May 27, 2014
  • Past Workshops
    • A public workshop was held on Wednesday, July 31, 2013. Click here to download the slides from that workshop.
    • A public workshop was held on Thursday, January 10, 2013. Click here to download the documents from that workshop.
    • A public workshop was held on Wednesday, January 23, 2008. Click here to download the documents from that workshop.

How to Submit Applications to E-Cert?

Manufacturers that want to submit applications for the Motorcycle and All-Terrain Vehicle (MC/ATV) category must first register with ARB and then submit XML files to E-Cert using the U.S. Environmental Protection Agency's (USEPA) Verify system. If you do not have an account and are interested in submitting an application for certification of MC/ATV by ARB then contact USEPA and request a CDX account.
Manufacturers who want to submit applications for the Light-Duty (LDV) category must first register with ARB. After registration, manufacturers will be able to submit XML files to E-Cert through the E-Cert Application Loader website.

  • Note: Please use Mozilla Firefox or Google Chrome with the E-Cert Application Loader website.
  • E-Cert Application Loader User Guide
    • This document provides instructions for uploading applications (XML files) into the E-Cert system using the E-Cert Application Loader website.

How to Register with ARB?

It is important to register prior to submitting an application. Failure to do so will result in a delay in processing your application. Registration serves two purposes: first, it provides a way our certification staff can contact you regarding the application, and second it ensures that the Executive Order is sent to the correct person. If you receive an email indicating that you need to register in E-Cert before your application can be accepted, please contact your certification representative below for assistance.

E-Cert Application Loader Computer Requirements

  • Google Chrome browser
  • Mozilla Firefox browser

Acceptable Electronic Document Formats

  • XML

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