{"id":1964,"date":"2025-04-10T07:25:33","date_gmt":"2025-04-10T11:25:33","guid":{"rendered":"https:\/\/documotors.com\/?p=1964"},"modified":"2025-04-10T07:25:33","modified_gmt":"2025-04-10T11:25:33","slug":"p0118","status":"publish","type":"post","link":"https:\/\/documotors.com\/wiki\/p0118\/","title":{"rendered":"P0118"},"content":{"rendered":"\n

El c\u00f3digo DTC P0118<\/strong> indica que la se\u00f1al del sensor de temperatura del refrigerante del motor (ECT) es demasiado alta, lo cual sugiere que la ECU interpreta una temperatura de motor anormalmente baja. Este sensor es fundamental para el control de la mezcla aire-combustible, el encendido y el funcionamiento del sistema de enfriamiento.<\/p>\n\n\n\n

Cuando aparece este error, pueden presentarse problemas como mezcla rica, arranque dif\u00edcil en caliente y fallos de encendido.<\/p>\n\n\n\n

Descripci\u00f3n del Error<\/h2>\n\n\n\n

El sensor ECT env\u00eda una se\u00f1al de voltaje a la ECU que disminuye a medida que aumenta la temperatura del motor. Si se detecta un voltaje excesivo (por ejemplo, superior a 4.9 V), la ECU interpreta que el motor est\u00e1 extremadamente fr\u00edo. Este tipo de lectura an\u00f3mala puede deberse a un circuito abierto, un sensor defectuoso o un conector desconectado.<\/p>\n\n\n\n

El c\u00f3digo DTC P0118<\/strong> se activa cuando esta condici\u00f3n persiste durante un tiempo determinado.<\/p>\n\n\n\n

Diagn\u00f3stico<\/h2>\n\n\n\n

Con un esc\u00e1ner automotriz se puede confirmar el c\u00f3digo y analizar la lectura de temperatura en vivo. Si el motor est\u00e1 caliente pero el sensor indica -40 \u00b0C (o una temperatura irreal), es se\u00f1al de que el circuito est\u00e1 abierto o el sensor est\u00e1 fallando.<\/p>\n\n\n\n

El diagn\u00f3stico debe incluir revisi\u00f3n del conector, pruebas de continuidad y medici\u00f3n de voltaje con mult\u00edmetro. Tambi\u00e9n puede ser \u00fatil comparar la lectura del sensor con un term\u00f3metro infrarrojo para comprobar su precisi\u00f3n.<\/p>\n\n\n\n

\u00bfEs grave el c\u00f3digo P0118?<\/h2>\n\n\n\n

S\u00ed. Este c\u00f3digo puede provocar una mezcla de combustible excesivamente rica, lo que aumenta el consumo, reduce la eficiencia del motor y genera mayor contaminaci\u00f3n. Adem\u00e1s, puede ocasionar que el ventilador del radiador no funcione correctamente, con riesgo de sobrecalentamiento.<\/p>\n\n\n\n

Posibles soluciones<\/h2>\n\n\n\n
    \n
  • Revisar que el conector del sensor ECT est\u00e9 bien conectado y limpio.<\/li>\n\n\n\n
  • Comprobar el cableado en busca de circuitos abiertos o pines corro\u00eddos.<\/li>\n\n\n\n
  • Verificar la se\u00f1al del sensor con un mult\u00edmetro.<\/li>\n\n\n\n
  • Reemplazar el sensor si no responde adecuadamente.<\/li>\n\n\n\n
  • Probar el funcionamiento de la ECU si el problema persiste tras reemplazar componentes.<\/li>\n<\/ul>\n\n\n\n

    Prevenciones<\/h2>\n\n\n\n
      \n
    • Realizar mantenimiento peri\u00f3dico al sistema de refrigeraci\u00f3n.<\/li>\n\n\n\n
    • Evitar manipulaciones de los sensores sin conocimientos t\u00e9cnicos.<\/li>\n\n\n\n
    • Instalar sensores y conectores OEM de calidad comprobada.<\/li>\n<\/ul>\n\n\n\n

      C\u00f3digos relacionados con el P0118<\/h2>\n\n\n\n
        \n
      • P0115<\/strong> \u2013 Sensor ECT: Circuito defectuoso<\/li>\n\n\n\n
      • P0116<\/strong> \u2013 Sensor ECT: Rango\/funcionamiento incorrecto<\/li>\n\n\n\n
      • P0117<\/strong> \u2013 Sensor ECT: Entrada baja<\/li>\n\n\n\n
      • P0125<\/strong> \u2013 Temperatura insuficiente para operaci\u00f3n en lazo cerrado<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"

        El c\u00f3digo DTC P0118 indica que la se\u00f1al del sensor de..<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[95],"tags":[96,90,18],"class_list":["post-1964","post","type-post","status-publish","format-standard","hentry","category-dtc","tag-codigos-dtc","tag-diagnosticos","tag-sistemas"],"yoast_head":"\nC\u00f3digo de Error P0118 \u2013 Sensor ECT: Entrada Alta<\/title>\n<meta name=\"description\" content=\"El c\u00f3digo DTC P0118 indica que la se\u00f1al del sensor de temperatura del refrigerante del motor (ECT) es demasiado alta, lo cual sugiere que la ECU\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/documotors.com\/wiki\/p0118\/\" \/>\n<meta property=\"og:locale\" content=\"es_ES\" \/>\n<meta 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