A material interpretation error that impaired your understanding of, or response to, a plea’s immigration consequences may support a California conviction challenge. Using an interpreter does not itself show an error, and an error does not automatically undo the plea. The useful question is precise: Which warning, right, charge, sentence term, or immigration consequence was not interpreted or was conveyed differently, what did the person understand, and would accurate interpretation have changed the plea decision? Counsel must also match that alleged error to a remedy available for the person’s custody status and plea date.
Identify the words that mattered
Start with the hearing date, language and dialect, interpreter’s name if available, written plea form, and any recording or transcript. Mark the exact exchange in which the alleged problem occurred. Was a court warning omitted in the interpreted version? Was the written form translated before signing? Did the person ask for clarification? These are questions for reconstructing the event, not assumptions that an interpreter failed.
Compare the original recording or transcript with an independent, competent interpretation where one exists. A monolingual English transcript may record only what the interpreter said in English; it may not show exactly what the defendant heard in the other language. A signed English form likewise establishes that a form was signed, but by itself may not resolve what was explained orally. Former counsel’s file, interpreter assignment records, contemporaneous notes or messages, and testimony from people present may help identify a specific discrepancy. Preserve the original materials and where each copy came from. California Courts’ interpreter guidance recognizes that understanding court proceedings and assisting counsel are the reasons an interpreter may be needed; today’s guidance alone does not establish what standard governed an old hearing.
Connect the interpretation problem to an available claim
For a person no longer in criminal custody, Penal Code section 1473.7(a)(1) permits a motion when a prejudicial error impaired the person’s ability to grasp or respond to a conviction’s actual or potential immigration consequences before accepting the plea. The person must also show that the conviction has or could have an adverse immigration effect, such as removal or denial of status, a benefit, or naturalization, and prove the statutory ground by a preponderance of the evidence. An alleged mistranslation must be tied to those elements; the statute does not create a general interpreter-error motion for every old plea.
The California Supreme Court’s People v. Vivar, 11 Cal.5th 510 (2021) discusses how evidence from the time of the plea can bear on prejudice under section 1473.7. Vivar concerned immigration advice, not a finding that an interpreter mistranslated a plea. It is useful here for the prejudice inquiry, which asks whether there is a reasonable probability the person would have rejected the same plea had the adverse immigration consequence been understood. Evidence about priorities, available choices, counsel’s communications, and what the person did at the time can matter. An assertion made years later should be evaluated with the rest of the record.
If the specific allegation is that the court failed to give its required immigration advisement, Penal Code section 1016.5 supplies a different, date-sensitive motion. It contains a presumption about a missing record of the court’s advisement, not a presumption that interpretation was inaccurate. Relief under section 1016.5(b) concerns pleas accepted after January 1, 1978, where a specified adverse immigration consequence may occur; the California Supreme Court also requires prejudice from the deficient warning. See Zamudio. Section 1016.5(e) further says a plea accepted before January 1, 2026 is not invalid solely because the court did not use the new verbatim wording. Those court-warning rules should not be substituted for proof of what an interpreter actually conveyed.
If the person remains in criminal custody, counsel must assess a custody-appropriate claim under the actual facts; section 1473.7 is limited to those no longer in criminal custody. Any challenge to an old hearing also requires checking the law that applied when it occurred. Current California Rule of Court 2.893 describes appointment of spoken-language interpreters today, but it cannot be applied retroactively without checking the historical rule.
The Law Offices of David S. Chesley’s post-conviction relief page introduces the available California remedies. To discuss a specific interpreted plea and its record, call (800) 755-5174.