{"id":1968,"date":"2025-04-10T07:27:09","date_gmt":"2025-04-10T11:27:09","guid":{"rendered":"https:\/\/documotors.com\/?p=1968"},"modified":"2025-04-10T07:27:09","modified_gmt":"2025-04-10T11:27:09","slug":"p0120","status":"publish","type":"post","link":"https:\/\/documotors.com\/wiki\/p0120\/","title":{"rendered":"P0120"},"content":{"rendered":"\n

El c\u00f3digo DTC P0120<\/strong> indica que el circuito del sensor de posici\u00f3n del acelerador (TPS) o del sensor de posici\u00f3n del pedal del acelerador (seg\u00fan el tipo de sistema de control) est\u00e1 funcionando incorrectamente. Este sensor es fundamental para que la ECU conozca la apertura del acelerador y as\u00ed ajustar la inyecci\u00f3n de combustible, el encendido y otros par\u00e1metros del motor.<\/p>\n\n\n\n

Este c\u00f3digo puede afectar gravemente el rendimiento del motor, especialmente durante la aceleraci\u00f3n.<\/p>\n\n\n\n

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

El sensor TPS convierte la posici\u00f3n del acelerador en una se\u00f1al el\u00e9ctrica que se env\u00eda a la ECU. En los veh\u00edculos con pedal electr\u00f3nico, este c\u00f3digo tambi\u00e9n puede involucrar el sensor del pedal A. Cuando el voltaje enviado por el sensor est\u00e1 fuera del rango esperado o es inconsistente, se activa el c\u00f3digo DTC P0120<\/strong>.<\/p>\n\n\n\n

Las posibles causas incluyen un sensor defectuoso, problemas en el cableado, conectores sulfatados o una falla interna en el cuerpo de aceleraci\u00f3n electr\u00f3nico.<\/p>\n\n\n\n

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

El diagn\u00f3stico comienza leyendo el c\u00f3digo con un esc\u00e1ner automotriz. Luego se debe observar la se\u00f1al del TPS en tiempo real. Un comportamiento normal muestra un cambio progresivo de voltaje (por ejemplo, de 0.5 V a 4.5 V) a medida que se pisa el acelerador.<\/p>\n\n\n\n

Si la se\u00f1al es err\u00e1tica, se mantiene fija, o salta abruptamente, el sensor puede estar fallando. Tambi\u00e9n es importante revisar los cables del conector y verificar la continuidad entre el sensor y la ECU. Si el veh\u00edculo usa un pedal electr\u00f3nico, tambi\u00e9n se debe revisar el sensor de posici\u00f3n del pedal.<\/p>\n\n\n\n

\u00bfEs grave el c\u00f3digo P0120?<\/h2>\n\n\n\n

S\u00ed. Una falla en el TPS o en el sensor del pedal puede provocar una respuesta irregular del acelerador, p\u00e9rdida de potencia, titubeo o incluso que el motor entre en \u00abmodo a prueba de fallos\u00bb (limp mode), limitando la velocidad y la aceleraci\u00f3n. Tambi\u00e9n puede dificultar el arranque en ciertos modelos.<\/p>\n\n\n\n

No se recomienda conducir el veh\u00edculo por periodos prolongados con este error activo.<\/p>\n\n\n\n

Posibles soluciones<\/h2>\n\n\n\n
    \n
  • Inspeccionar y limpiar el conector del sensor TPS o del sensor del pedal.<\/li>\n\n\n\n
  • Verificar continuidad del cableado entre el sensor y la ECU.<\/li>\n\n\n\n
  • Medir la se\u00f1al del sensor con mult\u00edmetro para comprobar que var\u00ede de forma progresiva.<\/li>\n\n\n\n
  • Reemplazar el sensor si est\u00e1 da\u00f1ado o entrega valores err\u00e1ticos.<\/li>\n\n\n\n
  • En veh\u00edculos con pedal electr\u00f3nico, revisar tambi\u00e9n el cuerpo de aceleraci\u00f3n y el motor del actuador.<\/li>\n<\/ul>\n\n\n\n

    Prevenciones<\/h2>\n\n\n\n
      \n
    • No forzar el pedal del acelerador si presenta resistencia o comportamiento extra\u00f1o.<\/li>\n\n\n\n
    • Realizar limpieza preventiva del cuerpo de aceleraci\u00f3n cuando sea necesario.<\/li>\n\n\n\n
    • Utilizar repuestos originales o de calidad comprobada en los sensores del sistema de aceleraci\u00f3n.<\/li>\n<\/ul>\n\n\n\n

      C\u00f3digos relacionados con el P0120<\/h2>\n\n\n\n
        \n
      • P0121<\/strong> \u2013 TPS: Rango\/funcionamiento incorrecto<\/li>\n\n\n\n
      • P0122<\/strong> \u2013 TPS: Entrada baja<\/li>\n\n\n\n
      • P0123<\/strong> \u2013 TPS: Entrada alta<\/li>\n\n\n\n
      • P0220<\/strong> \u2013 Sensor TPS\/Pedal B: Circuito defectuoso<\/li>\n\n\n\n
      • P2135<\/strong> \u2013 Incongruencia entre sensores de pedal y TPS<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"

        El c\u00f3digo DTC P0120 indica que el circuito 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-1968","post","type-post","status-publish","format-standard","hentry","category-dtc","tag-codigos-dtc","tag-diagnosticos","tag-sistemas"],"yoast_head":"\nC\u00f3digo de Error P0120 \u2013 Sensor TPS\/Pedal A: Circuito Defectuoso<\/title>\n<meta name=\"description\" content=\"El c\u00f3digo DTC P0120 indica que el circuito del sensor de posici\u00f3n del acelerador (TPS) o del sensor de posici\u00f3n del pedal del acelerador (seg\u00fan el tipo de\" \/>\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\/p0120\/\" \/>\n<meta property=\"og:locale\" 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