IID Violations: What You Need to Know
Understanding different types of IID violations, their consequences, and what to do if you receive one.
Types of IID Violations
Not all violations are equal. Here are the main types and their severity.
Failed Breath Test
HighBlowing above the BAC limit (usually 0.02-0.025%)
Consequence: Logged and reported; may extend IID requirement
Missed Rolling Retest
Medium-HighFailing to provide a retest when prompted while driving
Consequence: Logged as violation; extended honking until test provided
Missed Calibration
HighNot completing monthly calibration on time
Consequence: Device lockout; violation reported; fees
Tampering/Circumvention
Very HighAttempting to bypass, disconnect, or tamper with device
Consequence: Criminal charges possible; extended requirement; license revocation
Having Someone Else Blow
Very HighGetting another person to provide breath sample
Consequence: Criminal charges; extended requirement; possible jail
Driving Without IID
Very HighDriving a vehicle without an installed IID during requirement period
Consequence: Criminal charges; license revocation; jail possible
What Happens After a Failed Test?
Immediate lockout
Car won't start for a set period (usually 5-30 minutes for first fail)
Violation logged
The failed test is recorded with timestamp, BAC reading, and camera image (if equipped)
Retest opportunity
After lockout expires, you can try again. Multiple fails = longer lockouts
Reported at calibration
Data is transmitted to monitoring authority at your next calibration
Review by authorities
Court/DMV/probation reviews and may take action (hearing, extension, etc.)
Potential Consequences
Extended IID requirement
Violations often add months to your requirement. In some states, each violation extends by 3-6 months.
Probation violation
If you're on probation, IID violations may trigger a probation violation hearing with potential jail time.
License suspension
Serious or repeated violations can result in suspension of your restricted driving privileges.
Criminal charges
Tampering, circumvention, or having someone else blow can result in new criminal charges.
Additional fees
Violation reporting fees, lockout reset fees, and potential court costs add up quickly.
Court hearings
You may be required to appear in court to explain violations, adding time and legal costs.
What to Do After a Violation
1. Document everything
Write down exactly what happened, including time, what you ate/drank, any products you used, and circumstances.
2. Don't panic
A single failed test isn't necessarily disaster. False positives happen, and authorities typically review the full picture.
3. Contact your attorney
If you believe the test was a false positive or the violation was unjust, consult with a DUI attorney before your data is reviewed.
4. Prepare for explanation
You may be asked to explain the violation at your next hearing or review. Have your documentation ready.
False Positives Are Possible
IID devices can sometimes give false positive readings. Common causes include:
- • Mouthwash, breath spray, or other alcohol-containing products
- • Certain foods (bread, ripe fruit, energy drinks)
- • Hand sanitizer residue near your face
- • Certain medications
- • Acid reflux or GERD
- • Diabetes-related ketones
If you experience a false positive, wait 15 minutes and retest. The retest result is also logged and can help demonstrate it wasn't actual alcohol.
Learn more about false positivesHow to Avoid Violations
Don't drink and drive
The most obvious but most important. Even small amounts of alcohol can register on an IID.
Avoid alcohol products
No mouthwash, breath spray, or hand sanitizer near your face before testing.
Never miss calibration
Schedule appointments early and set multiple reminders.
Always complete retests
Pull over safely and complete rolling retests promptly when prompted.
False Positive Guide
What to do if you get a false reading
Tips & Best Practices
Avoid common problems with your IID
Sources
Violation information based on state laws and IID provider documentation as of January 8, 2026. Consequences vary by state.