Summary probation
Summary probation, sometimes called informal or court probation, is typical in misdemeanor cases. There's no probation officer. You report directly to the court, usually by showing proof that you completed what the judge ordered.
You missed a class. You missed a restitution payment. A drug test came back dirty, or you were arrested on something new, and now there's a hearing date on the calendar and a letter from your probation officer sitting on the counter. Whatever brought you here, you already know that something has gone wrong with your probation.
Here's what's actually at stake. When the judge granted you probation, a sentence was suspended over your head. If the court finds you violated, that sentence can come down. This is a serious moment in your case, and it moves faster and with fewer protections than the case that put you on probation in the first place.
A probation violation is a breach of any condition the court imposed. Any condition. The breadth of that is the part most people don't expect, because conditions that felt like paperwork at sentencing carry the same weight as the ones that felt serious.
A new arrest can support a violation finding even if the new charge is never filed, and even if it's filed and later dismissed. The violation and the new case are separate proceedings with separate rules. Losing one does not mean losing the other, and winning one does not mean winning the other.
California courts grant two kinds of probation, and which one you're on changes how much exposure you have.
Summary probation, sometimes called informal or court probation, is typical in misdemeanor cases. There's no probation officer. You report directly to the court, usually by showing proof that you completed what the judge ordered.
Formal probation, also called supervised probation, is typical in felony cases. In Los Angeles County you're supervised by the L.A. County Probation Department and assigned an officer you have to report to. More conditions and more contact means more opportunities to fall out of compliance, and it means someone is watching for it.
The length of probation changed significantly on January 1, 2021. Penal Code section 1203a (opens in new window) now caps probation at one year for most misdemeanors. Penal Code section 1203.1(a) (opens in new window) caps it at two years for most felonies. Those caps don't apply to everything. Violent felonies listed in Penal Code section 667.5(c) (opens in new window) can carry longer terms, and some offenses set their own probation length by statute. Domestic violence cases require a minimum 36-month term under Penal Code section 1203.097 (opens in new window). Most DUI cases run three to five years under Vehicle Code section 23600 (opens in new window).
If you're unsure how long your probation is supposed to run, that's worth checking. People are sometimes accused of violating probation that should already have expired.
Penal Code section 1203.2 (opens in new window) gives law enforcement broad authority here. A police officer, your probation officer, or a parole officer can arrest you without a warrant if there's probable cause to believe you violated a condition. No judge has to sign anything first.
The court can also revoke your probation summarily, meaning on its own and without a hearing, while the allegation is pending. Summary revocation stops the probation clock from running. If your probation was going to end next month, it now does not, and it stays open until the court resolves the violation.
In most cases the court issues a bench warrant at the same time. Depending on the underlying offense and the nature of the allegation, that warrant may carry a no-bail hold, which means you sit in custody until the hearing.
There's one protection worth knowing about. Under Penal Code section 1203.25 (opens in new window), a person released at or after the initial hearing and before a formal violation hearing is to be released on their own recognizance, unless the court finds by clear and convincing evidence that the circumstances require otherwise to protect the public and to reasonably assure the person returns to court. Whether that presumption applies to your situation depends on your record and the allegation, and it's something to raise early rather than late.
If there's already a warrant out for you, waiting to be picked up is almost always worse than walking it in with a lawyer. When you appear voluntarily and on your own terms, the court sees someone who came in to handle it. When you're arrested on the warrant during a traffic stop at 1 a.m., the court sees something else.
This is the section to read twice, because the difference is not a technicality. It is the whole reason these hearings are dangerous.
The proceeding is formally a probation violation hearing or a revocation hearing. California lawyers usually call it a Vickers hearing, after People v. Vickers (1972) 8 Cal.3d 451, the case that set out what process you're owed.
Not a smaller jury, not a jury on request. One judge hears the evidence and makes the finding, and in most cases it's the same judge who sentenced you.
At a criminal trial, the prosecution has to prove its case beyond a reasonable doubt. At a violation hearing, it only has to prove the violation by a preponderance of the evidence, which means more likely than not. People v. Rodriguez (1990) 51 Cal.3d 437. A judge who's fifty-one percent persuaded can find a violation on evidence that wouldn't have come close to supporting a conviction.
Statements that would be excluded at trial can be admitted at a violation hearing if the court finds them sufficiently reliable. People v. Maki (1985) 39 Cal.3d 707. In practice this means the probation officer's written report is frequently the centerpiece of the case against you, even though the people who supplied the information in it never take the stand.
You still have one, rooted in Morrissey v. Brewer (1972) 408 U.S. 471 and applied to probation revocation in Vickers, but the court can dispense with live testimony for good cause. People v. Arreola (1994) 7 Cal.4th 1144. Preserving that right, and objecting when it's being sidestepped, requires someone who knows to do it at the moment it matters.
The judge has three broad options, and the distance between them is enormous.
The violation is found, the judge decides it doesn't warrant more, and you continue on the same conditions you were already under.
This can mean additional classes, a treatment program, community service hours, electronic monitoring, or a short custody term, followed by continued probation.
If you were given probation with a suspended prison term, that term is what the court can now impose. In felony cases this is why the stakes at a violation hearing can exceed the stakes at the original sentencing.
If you're not a United States citizen, a violation finding, and especially any new conviction underlying it, can carry immigration consequences that have nothing to do with your sentence. Custody time can also affect your ability to attend immigration proceedings. This is something to raise with your attorney at the first conversation, not after the hearing.
A violation also affects your ability to clear your record later. Relief under Penal Code section 1203.4, what most people call expungement, generally depends on successfully completing probation. A revocation can close that door, and the record you were planning to clean up in a year stays where it is.
Knarik Boyadzhyan served as a Deputy Public Defender, standing next to people in exactly the position you're in now. A probation violation defense depends on preparation that begins before the hearing date.
These reports are written quickly, and they can be wrong. A test result attributed to the wrong person, a class that was completed but never credited, or a missed appointment that was actually rescheduled can change the case. Documentation is what defeats these allegations, and gathering it takes time we would rather have.
Many conditions require willful noncompliance before a violation can be found. That distinction matters most with money. Being unable to pay is not the same as refusing to pay, and a court cannot revoke probation solely because someone is too poor to keep up with fines or restitution without first inquiring into whether the failure was willful and considering alternatives. Bearden v. Georgia (1983) 461 U.S. 660.
When the case rests on a hearsay report rather than a witness, the reliability of that report is fair game, and so is the decision to proceed without live testimony.
When a new criminal case and a violation are pending at the same time, the violation hearing often goes first, because the prosecution would rather meet the lower burden. What you say and concede at that hearing can follow you into the new case. Handling both together, with the interaction between them in mind, protects you in a way that handling them separately does not.
Many violations never reach a contested hearing. They're resolved by agreement on terms that keep probation alive, often with an added condition that addresses whatever went wrong. Where the evidence is strong, that's frequently the better path, and it's a conversation we'd rather have with the prosecutor early.
Penal Code section 1203.3 (opens in new window) lets the court modify the terms of probation, and in appropriate cases end it early. If a condition is genuinely unworkable for you, changing it is better than violating it again in six months.
A failure to appear turns a manageable problem into a warrant.
Attendance sheets, program certificates, payment receipts, test results, text messages and emails with your probation officer. Anything that shows what you actually did. This evidence gets harder to find with every week that passes.
Officers are required to report what you tell them, and explanations offered in good faith regularly end up in the report as admissions.
Call an attorney about walking it in rather than being picked up on it.
Not on the phone from custody, not on social media, not with the person involved in the new case.
If your question is not answered here, call (310) 877-7770 to discuss your situation.

Boyadzhyan Legal Shield represents people facing probation violations throughout Los Angeles County from the firm's office in Encino. If you have a hearing date, a warrant, or a call from your probation officer that you don't know how to answer, we can talk through where your case stands and what your options are. Initial consultations are free and confidential, with no obligation to hire the firm.
This page is general legal information, not legal advice, and does not create an attorney-client relationship. California statute references link to the official California Legislative Information site.
Expungement Under Penal Code 1203.4: What a California Dismissal Actually Does
A Penal Code 1203.4 dismissal does not erase, seal, or delete anything. It withdraws your plea and dismisses the case, which changes who is allowed to ask about the conviction, who is allowed to see it, and who is allowed to hold it against you — and those three questions have different answers depending on whether you are looking at the Department of Justice record or the court file.
Immigration Consequences of a California Criminal Conviction: What the State Calls It vs. What Federal Law Counts
Federal immigration law applies its own definition of "conviction," so a California case a court calls dismissed, expunged, or reduced can still count against a noncitizen — while some dispositions genuinely do not count at all. This page maps each California label onto the federal rule that actually governs it, and names the two 2026 developments that changed the practical answers.
What Happens After an Arrest in Los Angeles County?
After a Los Angeles County arrest, booking records, release papers, the complaint, and court orders answer different questions. Learn which one controls next.