Approval Details

Valid E.O.


This Executive Order approved the specified parts on on April 25, 1996.
As of Wednesday, February 21st, 2024 this Executive Order has not been overturned or superceeded.

Approved Parts

1996 and older model-year gasoline powered vehicles.

This Executive Order may be listed as:
  • C.A.R.B.E.O. D-400
  • Executive Order 400 / D400
  • ARB # D-400
  • Executive Order No: D-400
  • C.A.R.B. No. D-400
  • Resolution D-400
For Free CARB Executive Order Status verification, email an image of the device Executive Order label as well as the Year/Make/Model and Test Group # of the vehicle to [email protected]

Download: Executive Order D-400 PDF

D-400 Document:

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