{
  "$schema": "robofaults-fault-record/v0",
  "kind": "error",
  "brand": "eufy",
  "page_en": "https://robofaults.com/eufy/error-12/",
  "page_es": "https://robofaults.com/es/eufy/error-12/",
  "code": "12",
  "slug": "error-12",
  "device_type": "vacuum",
  "name_en": "Right wall sensor needs cleaning",
  "name_es": "Sensor de pared derecho sucio",
  "badge": "ERR 12",
  "severity": "warn",
  "severity_note_en": "robot can't follow walls cleanly until the side sensor is wiped",
  "severity_note_es": "el robot no puede seguir las paredes hasta limpiar el sensor lateral",
  "series": [
    "X8",
    "LR/L35"
  ],
  "tools_en": "clean dry cloth",
  "tools_es": "paño limpio y seco",
  "time_min": 3,
  "difficulty": "easy",
  "safety": "none",
  "safety_note_en": "",
  "safety_note_es": "",
  "meaning_en": "Error 12 means the <b>right wall sensor needs cleaning</b>. The sensor that keeps the robot a fixed distance from walls is coated in dust — wipe it with a dry cloth and restart the clean.",
  "meaning_es": "El error 12 significa que el <b>sensor de pared derecho necesita limpieza</b>. El sensor que mantiene al robot a distancia fija de las paredes está cubierto de polvo — límpialo con un paño seco y reinicia la limpieza.",
  "causes": [
    {
      "title_en": "Dust buildup on the sensor window",
      "title_es": "Acumulación de polvo en la ventana del sensor",
      "detail_en": "The wall sensor sits low on the robot's right side, exactly where dust gets kicked up on every pass.",
      "detail_es": "El sensor de pared va bajo, en el lado derecho del robot, justo donde el polvo se levanta en cada pasada.",
      "likelihood": "most_common"
    },
    {
      "title_en": "Smudge from a recent bump",
      "title_es": "Mancha tras un roce reciente",
      "detail_en": "Scuffing along a dirty skirting board can smear the sensor window in one pass.",
      "detail_es": "Rozar un zócalo sucio puede embadurnar la ventana del sensor en una sola pasada.",
      "likelihood": "common"
    },
    {
      "title_en": "Sensor failure",
      "title_es": "Avería del sensor",
      "detail_en": "An Error 12 that returns seconds after a careful wipe points at the sensor itself — a support case.",
      "detail_es": "Un error 12 que vuelve segundos después de una limpieza cuidadosa apunta al propio sensor — caso para soporte.",
      "likelihood": "rare"
    }
  ],
  "steps": [
    {
      "title_en": "Locate the right wall sensor",
      "title_es": "Localiza el sensor de pared derecho",
      "detail_en": "With the robot off, find the sensor window on the right edge of the chassis.",
      "detail_es": "Con el robot apagado, busca la ventana del sensor en el borde derecho del chasis."
    },
    {
      "title_en": "Wipe it clean",
      "title_es": "Límpialo",
      "detail_en": "Polish the window with a clean, dry cloth — no liquids.",
      "detail_es": "Pule la ventana con un paño limpio y seco — sin líquidos."
    },
    {
      "title_en": "Restart the clean",
      "title_es": "Reinicia la limpieza",
      "detail_en": "Start a new mission; contact eufy support if the error persists on a clean sensor.",
      "detail_es": "Inicia una nueva limpieza; contacta con el soporte de eufy si el error persiste con el sensor limpio."
    }
  ],
  "parts": [],
  "related": [
    "10",
    "19"
  ],
  "sources": [
    {
      "label_en": "eufy Support — X8/LR20/LR30/L35 series voice alerts and solutions",
      "label_es": "Soporte de eufy — Alertas de voz y soluciones de las series X8/LR20/LR30/L35",
      "url": "https://service.eufy.com/article-description/X8-Series-RoboVac-Voice-Alerts-and-Solution",
      "kind": "official"
    }
  ],
  "confidence": "official",
  "last_verified": "2026-07-06"
}