Approval Details

Valid E.O.


This Executive Order approved the specified parts on on March 20, 1997.
As of Wednesday, February 28th, 2024 this Executive Order has not been overturned or superceeded.

Approved Parts

1994 and older model-year vehicles equipped with a gasoline engine and no OBD II systemReplaces the PCV valve with a new valve equipped with a filter

This Executive Order may be listed as:
  • C.A.R.B.E.O. D-422
  • Executive Order 422 / D422
  • ARB # D-422
  • Executive Order No: D-422
  • C.A.R.B. No. D-422
  • Resolution D-422
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-422 PDF

D-422 Document:

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