Verification Procedure - Warranty Requirements

This page last reviewed March 5, 2019

The Diesel Emission Control Strategy Warranty Report must be submitted by April 1 of each calendar year. This report, as outlined in Section 2707 of the Verification Procedure, must be submitted on an annual basis by all manufacturers who have applied and received verification by Air Resources Board.  A manufacturer whose verification status has changed or has been suspended is still required to comply with the warranty reporting. Manufacturers are also required to submit a warranty report within 30 calendar days should their warranty claims exceed four percent of the number of diesel engines using the diesel emission control strategy.  Failure to comply with the warranty requirements may result in the de-verification of a manufacturer's diesel emission control strategy(s), and/or suspension of all verification activities. Complete information on this requirement may be found in the Verification Procedure.

For your convenience we have provided a Warranty Form for your use in submitting the information. Please click on the link(s) below for the warranty reporting form and information. If you have any questions regarding the warranty forms, please contact Michael Logue, at (626) 575-6847 or by email to