California Noncompliance

Blowing into someone else's IID is immoral and could be considered tampering with the device having adverse consequences for the DUI offender.So, even if you do get a sober friend to blow into your IID against your Court ordered requirements, if you have been drinking, you will fail the retest.

If you fail to comply with the service requirement, the California DMV will pause your interlock program.02 range, and a single drink could result in you blowing a fail on your interlock device. If you continue to fail interlock tests, you'll be removed from the pilot program and won't be able to drive.

When you are charged with a DUI, you are liable to suffer a variety of penalties, most commonly a license suspension, fines and court fees, and potentially some jail time. Recently, many states have begun to require offenders to install an ignition interlock device, even for first-time DUI charges.

All states allow drivers to submit a second breath test if they fail the first one. However, if they provide a second failed sample, they may experience a lockout. This means they will be unable to start the car after a certain amount of time passes.

Generally speaking, failing an interlock test is considered a violation, and this data will be sent to your state regulatory authority. They will ultimately use this data to make a decision about your continued participation in the program.

Refusing or failing to get the device installed. Driving or even attempting to drive a vehicle without an IID. Failing one or more startup tests. Failing a rolling retest. Missing or intentionally skipping a rolling retest. Asking someone else to take the breath test for you. Tampering with or attempting to remove the IID.

Because Alcohol Interlock Devices can detect trace amounts of alcohol from other products, the effective limit required to operate your vehicle is BAC < 0.020.If you fail or miss a random/rolling retest (BAC recorded above 0.02) this is considered a violation.

1. From Jan. 1, 2026, the law mandates that repeat offenders for driving under the influence and first DUI offenders whose violations resulted in injury install an ignition interlock device for a period ranging from 12 to 48 months.