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CR-223Optional

Ignition Interlock Calibration Verification

California · Judicial Council of California · Effective January 1, 2021

This form is used to record that an ignition interlock device has been checked and confirmed to be working correctly. It asks for details about the defendant, the installer, the vehicle, and the calibration settings.

Open the official PDFfrom Judicial Council of California

Where this fits in a case

General & info

Information / general use — not tied to one step of a case

This form is used in a criminal case to document the verification of an ignition interlock device, which is required by law.

Prepared by the court or clerk.

Official instructions

How-to guides published by the court for this form.

Common questions

Who fills out this form?
The form includes sections for the installer to sign and sections for the defendant to sign. It is also for court use only.
What information does this form collect?
It collects details like the defendant's name, the installer's name, the vehicle's information, and the calibration settings of the interlock device.

Revision history

No changes recorded since we started tracking this form on October 9, 2026. The current version took effect January 1, 2021.

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