Underage DUI in California: Zero Tolerance Law Complete Guide

If you're under 21 and have been arrested for drinking and driving in California, you're facing a completely different set of rules than adult drivers. California's zero tolerance law means that any detectable amount of alcohol — as low as 0.01% BAC — is enough for penalties. This guide consolidates everything you need to know about underage DUI in California.

California's Zero Tolerance Law: VC 23136

Vehicle Code §23136 establishes California's zero tolerance policy for drivers under 21. If you are under 21 and a Preliminary Alcohol Screening (PAS) test detects a BAC of 0.01% or higher, your driving privilege is subject to a 1-year suspension. That's a level of alcohol so low that it can result from a single sip of beer, a dose of cough medicine, or even some mouthwashes.

This is a civil (administrative) penalty, not a criminal charge. The officer confiscates your license at the scene and issues you a temporary 30-day permit. No arrest, no booking, no court — just an immediate DMV action.

Three Levels of Underage DUI Charges

Depending on your BAC, you could face one or more of three separate charges:

Level 1: VC 23136 — Zero Tolerance (0.01%+ BAC)

Type: Civil/administrative infraction (not criminal)

• BAC threshold: 0.01%
• Penalty: 1-year license suspension
• No arrest required
• No criminal record
• No jail, no fines (beyond license reinstatement fees)

Level 2: VC 23140 — Underage Drinking and Driving (0.05–0.079% BAC)

Type: Infraction

• BAC threshold: 0.05%
• Penalty: 1-year license suspension
• Fine: Up to $100 (plus penalty assessments of approximately $350 total)
• DUI program: Court may order a 3-month education program for those 18–20
• No jail time
• Not a misdemeanor — does not create a criminal record in the traditional sense

Level 3: VC 23152 — Standard DUI (0.08%+ BAC)

Type: Misdemeanor (or felony with aggravating factors)

• BAC threshold: 0.08% (same as adults)
• This is a full DUI charge with all the penalties an adult faces: jail, fines, DUI classes, SR-22, IID, probation
• Plus additional underage penalties: 1-year license suspension (vs 6 months for adults), no restricted license for the first 30 days
• Creates a criminal record

All three charges can apply simultaneously. A 19-year-old with a 0.10% BAC could face VC 23136 (zero tolerance), VC 23140 (underage drinking and driving), and VC 23152 (standard DUI) all at once.

The PAS Test: You Cannot Refuse

Here's where underage drivers face a critical difference from adults. Under VC 23136(c), drivers under 21 cannot refuse a Preliminary Alcohol Screening (PAS) test — the roadside breathalyzer — without penalty.

For adult drivers (21+), the PAS test is technically optional (they only have to submit to a post-arrest chemical test under implied consent). But for underage drivers, refusing the PAS test results in a 1-year license suspension — the same penalty as failing it.

After a lawful arrest, the implied consent law (VC 23612) applies equally to underage and adult drivers. Refusing a post-arrest chemical test (breath or blood at the station) adds:

• 1-year license suspension (on top of DUI suspension)
• Mandatory 48 hours additional jail time
• The refusal can be used against you in court

DMV APS Hearing: You Have 10 Days

Just like adult DUI cases, you have 10 calendar days from the date of arrest to request a DMV Administrative Per Se (APS) hearing. If you don't request the hearing within 10 days, the license suspension becomes automatic after the 30-day temporary permit expires.

The APS hearing is your opportunity to challenge the suspension. Common grounds include:

• The officer lacked reasonable cause to believe you were driving under the influence
• The PAS or chemical test was improperly administered
• The testing device was not properly calibrated
• You were not actually driving the vehicle

Request the hearing immediately — the 10-day deadline is strict and cannot be extended.

Impact on College

An underage DUI can have cascading effects on your college experience:

Financial Aid

A DUI conviction can affect federal financial aid eligibility, particularly if it's connected to a drug offense. While a standalone DUI doesn't automatically disqualify you from federal student aid, some scholarship programs and institutional aid have conduct requirements that may be affected.

Campus Housing

Many universities require disclosure of criminal convictions on housing applications. A DUI conviction — especially if you're under 21 — may result in denial of campus housing or additional restrictions.

Scholarships

Private scholarships often include morality clauses or conduct requirements. An alcohol-related conviction can result in loss of scholarship funding.

School Disciplinary Action

If the DUI arrest occurred on campus or at a school-sponsored event, you may face separate university disciplinary proceedings in addition to criminal charges. This can result in academic probation, suspension, or expulsion.

Greek Life

Fraternities and sororities often have national organization rules about member conduct. An underage DUI may affect your membership status.

Impact on Future Career and Professional Licensing

An underage DUI conviction can affect your ability to obtain professional licenses later in life. Medical boards, law schools (bar admission), nursing boards, teaching credentials, and other licensing agencies all ask about criminal history. A DUI at 19 can create complications at 25 when you're applying for your professional license.

For a detailed analysis of DUI and professional licenses, see our guide on DUI and your career.

Additional Charges That Can Compound

Fake ID (PC 470b)

If you were caught using a fake ID to purchase alcohol, you face additional criminal charges under Penal Code §470b (possession of a forged ID) — a wobbler that can be charged as a misdemeanor or felony.

Minor in Possession (MIP — Business & Professions Code §25662)

If you're under 21 and in possession of alcoholic beverages, you can be charged with MIP — a misdemeanor carrying a $250 fine and 24–32 hours of community service for a first offense. MIP charges can stack on top of DUI charges.

Open Container (VC 23224)

Having an open container of alcohol in the vehicle, even if you weren't driving impaired, is an additional infraction for drivers under 21 that can result in a 30-day vehicle impound and $1,000 fine.

A Parents' Guide: What to Do If Your Child Is Arrested

If your teenager or young adult has been arrested for DUI, here's what to do:

1. Stay calm. Your child is scared. They need your support, not a lecture — at least not right now.
2. Request the DMV APS hearing within 10 days. This is the single most time-sensitive action. Call (916) 657-6525 or go online.
3. Consult a DUI attorney immediately. Underage DUI cases have unique dynamics and there may be options an experienced attorney can pursue.
4. Do NOT let your child speak to anyone about the case without an attorney present.
5. Gather documentation: the citation, temporary license, any paperwork from the arrest, and the officer's report when available.
6. Address the underlying issue. If your child has a developing problem with alcohol, early intervention is far more effective than waiting for another incident.

How DUI-Help.org Can Help

An underage DUI is overwhelming for both the young driver and their family. DUI-Help.org offers:

• Free 30-minute legal consultation to assess the specific charges and options
• Personalized reinstatement plan covering license restoration, DUI classes, and DMV requirements
• DMV hearing assistance — we help you prepare for the APS hearing
• Bilingual support in English and Spanish — many families in California need guidance in their preferred language
• Dedicated case specialist who coordinates every step

Call (916) 244-9700 or sign up online. We help families navigate this process every day — you don't have to figure it out alone.