{"id":1869,"date":"2025-04-10T06:14:16","date_gmt":"2025-04-10T10:14:16","guid":{"rendered":"https:\/\/documotors.com\/?p=1869"},"modified":"2025-04-10T06:14:17","modified_gmt":"2025-04-10T10:14:17","slug":"p0072","status":"publish","type":"post","link":"https:\/\/documotors.com\/wiki\/p0072\/","title":{"rendered":"P0072"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">El c\u00f3digo DTC P0072 aparece cuando la ECU detecta que la se\u00f1al el\u00e9ctrica proveniente del sensor de temperatura del aire ambiente es demasiado baja. Este c\u00f3digo OBDII indica que la tensi\u00f3n del circuito est\u00e1 por debajo del m\u00ednimo aceptable, lo que puede deberse a un cortocircuito a tierra o un sensor da\u00f1ado.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" style=\"font-size:1.2em !important; border-bottom:1px solid #ccc !important; padding-bottom:0.8em !important; padding-top:1.2em !important; padding-right:25px; cursor:pointer; background:url(https:\/\/documotors.com\/wp-content\/uploads\/99174301744201836.svg) no-repeat right center; background-size:20px auto;\">Descripci\u00f3n del Error<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">El sensor AAT opera mediante una resistencia de tipo NTC (coeficiente negativo de temperatura): a mayor temperatura, menor resistencia. Si el voltaje que la ECU recibe es demasiado bajo, interpretar\u00e1 que hay una temperatura exterior extremadamente fr\u00eda o un fallo en el circuito. Esto puede influir negativamente en el sistema de aire acondicionado, ventiladores o incluso en la mezcla aire-combustible en motores sensibles a las condiciones ambientales.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" style=\"font-size:1.2em !important; border-bottom:1px solid #ccc !important; padding-bottom:0.8em !important; padding-top:1.2em !important; padding-right:25px; cursor:pointer; background:url(https:\/\/documotors.com\/wp-content\/uploads\/99174301744201836.svg) no-repeat right center; background-size:20px auto;\">Diagn\u00f3stico<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Se comienza escaneando el sistema para confirmar el c\u00f3digo y registrar las condiciones en que se gener\u00f3. Luego, se inspecciona el sensor y el cableado en busca de cortocircuitos o conexi\u00f3n a tierra no deseada. Con un mult\u00edmetro se verifica la resistencia del sensor y se comparan los valores con los especificados por el fabricante a distintas temperaturas. Tambi\u00e9n se mide la tensi\u00f3n del circuito con el contacto activado.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" style=\"font-size:1.2em !important; border-bottom:1px solid #ccc !important; padding-bottom:0.8em !important; padding-top:1.2em !important; padding-right:25px; cursor:pointer; background:url(https:\/\/documotors.com\/wp-content\/uploads\/99174301744201836.svg) no-repeat right center; background-size:20px auto;\">\u00bfEs grave el c\u00f3digo P0072?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">No pone en riesgo el funcionamiento del motor, pero puede causar fallos en la climatizaci\u00f3n autom\u00e1tica, encendido prematuro de ventiladores y mezcla incorrecta en arranques en fr\u00edo. Es importante corregirlo para restablecer el comportamiento \u00f3ptimo de los sistemas auxiliares.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" style=\"font-size:1.2em !important; border-bottom:1px solid #ccc !important; padding-bottom:0.8em !important; padding-top:1.2em !important; padding-right:25px; cursor:pointer; background:url(https:\/\/documotors.com\/wp-content\/uploads\/99174301744201836.svg) no-repeat right center; background-size:20px auto;\">Posibles soluciones<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Sustituci\u00f3n del sensor de temperatura ambiente si se encuentra defectuoso.<\/li>\n\n\n\n<li>Reparaci\u00f3n de cables pelados o en corto a tierra.<\/li>\n\n\n\n<li>Revisi\u00f3n y limpieza de conectores sucios o corro\u00eddos.<\/li>\n\n\n\n<li>Borrado del c\u00f3digo de falla con esc\u00e1ner automotriz tras completar la reparaci\u00f3n.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" style=\"font-size:1.2em !important; border-bottom:1px solid #ccc !important; padding-bottom:0.8em !important; padding-top:1.2em !important; padding-right:25px; cursor:pointer; background:url(https:\/\/documotors.com\/wp-content\/uploads\/99174301744201836.svg) no-repeat right center; background-size:20px auto;\">Prevenciones<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Proteger el cableado y los sensores en \u00e1reas expuestas como el frontal del veh\u00edculo.<\/li>\n\n\n\n<li>Utilizar sensores OEM o equivalentes.<\/li>\n\n\n\n<li>No ignorar comportamientos an\u00f3malos en el aire acondicionado o ventiladores.<\/li>\n\n\n\n<li>Verificar se\u00f1ales el\u00e9ctricas al realizar revisiones peri\u00f3dicas.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" style=\"font-size:1.2em !important; border-bottom:1px solid #ccc !important; padding-bottom:0.8em !important; padding-top:1.2em !important; padding-right:25px; cursor:pointer; background:url(https:\/\/documotors.com\/wp-content\/uploads\/99174301744201836.svg) no-repeat right center; background-size:20px auto;\">C\u00f3digos relacionados con el P0072<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>P0070<\/strong> \u2013 Sensor de temperatura ambiente, circuito<\/li>\n\n\n\n<li><strong>P0071<\/strong> \u2013 Sensor de temperatura ambiente, rango o rendimiento<\/li>\n\n\n\n<li><strong>P0073<\/strong> \u2013 Sensor de temperatura ambiente, se\u00f1al alta<\/li>\n\n\n\n<li><strong>P0113<\/strong> \u2013 Sensor IAT, se\u00f1al alta<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>El c\u00f3digo DTC P0072 aparece cuando la ECU detecta que la..<\/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-1869","post","type-post","status-publish","format-standard","hentry","category-dtc","tag-codigos-dtc","tag-diagnosticos","tag-sistemas"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.0 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>C\u00f3digo de Error P0072 \u2013 Sensor de temperatura ambiente: entrada baja<\/title>\n<meta name=\"description\" content=\"El c\u00f3digo DTC P0072 aparece cuando la ECU detecta que la se\u00f1al el\u00e9ctrica proveniente del sensor de temperatura del aire ambiente es demasiado baja. 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