{"id":105203,"date":"2026-07-03T15:30:14","date_gmt":"2026-07-03T10:00:14","guid":{"rendered":"https:\/\/seminarsonly.com\/news\/?p=105203"},"modified":"2026-07-03T15:56:04","modified_gmt":"2026-07-03T10:26:04","slug":"der-fehlercode-p0299-turbocharger-supercharger-underboost-condition","status":"publish","type":"post","link":"https:\/\/seminarsonly.com\/news\/der-fehlercode-p0299-turbocharger-supercharger-underboost-condition\/","title":{"rendered":"Der Fehlercode P0299 : &#8220;Turbocharger \/ Supercharger Underboost Condition&#8221;"},"content":{"rendered":"<h3 data-path-to-node=\"0\"><span style=\"color: #008000;\"><em>Der OBD-II-Fehlercode <b data-path-to-node=\"0\" data-index-in-node=\"22\">P0299<\/b> bedeutet: <b data-path-to-node=\"0\" data-index-in-node=\"38\">\u201eTurbolader\/Kompressor \u2013 Ladedruck zu niedrig\u201c<\/b> (Turbocharger\/Supercharger Underboost Condition).<\/em><\/span><\/h3>\n<p data-path-to-node=\"1\">Das Motorsteuerger\u00e4t (ECU) hat festgestellt, dass der vom Turbolader oder Kompressor erzeugte Ladedruck unter dem vom Steuerger\u00e4t berechneten <b data-path-to-node=\"1\" data-index-in-node=\"142\">Sollwert<\/b> liegt.<\/p>\n<h2 data-path-to-node=\"3\"><span style=\"color: #800000;\"><b data-path-to-node=\"3\" data-index-in-node=\"0\">Typische Symptome<\/b><\/span><\/h2>\n<ul data-path-to-node=\"4\">\n<li>\n<p data-path-to-node=\"4,0,0\"><b data-path-to-node=\"4,0,0\" data-index-in-node=\"0\">Leistungsverlust:<\/b> Das Fahrzeug beschleunigt tr\u00e4ge oder nimmt das Gas schlecht an.<\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"4,1,0\"><b data-path-to-node=\"4,1,0\" data-index-in-node=\"0\">Notlaufprogramm (<i data-path-to-node=\"4,1,0\" data-index-in-node=\"17\">Limp Mode<\/i>):<\/b> Der Motor schaltet in den Notlauf, um Folgesch\u00e4den zu vermeiden (oft auf ca. 2000\u20133000 U\/min begrenzt).<\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"4,2,0\"><b data-path-to-node=\"4,2,0\" data-index-in-node=\"0\">Motorkontrollleuchte (MKL):<\/b> Leuchtet oder blinkt im Armaturenbrett.<\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"4,3,0\"><b data-path-to-node=\"4,3,0\" data-index-in-node=\"0\">Ungew\u00f6hnliche Ger\u00e4usche:<\/b> Ein lautes Zischen, Pfeifen oder Rauschen beim Beschleunigen (deutet oft auf ein Leck hin).<\/p>\n<\/li>\n<\/ul>\n<p><img decoding=\"async\" class=\"alignnone size-full wp-image-105204 aligncenter\" src=\"https:\/\/seminarsonly.com\/news\/wp-content\/uploads\/2026\/07\/fehlercode-p0299.jpg\" alt=\"fehlercode p0299\" width=\"548\" height=\"308\" srcset=\"https:\/\/seminarsonly.com\/news\/wp-content\/uploads\/2026\/07\/fehlercode-p0299.jpg 548w, https:\/\/seminarsonly.com\/news\/wp-content\/uploads\/2026\/07\/fehlercode-p0299-300x169.jpg 300w\" sizes=\"(max-width: 548px) 100vw, 548px\" \/><\/p>\n<h3>Also Read : <a href=\"https:\/\/seminarsonly.com\/news\/wunschgutschein-fehler-rdmx3-so-losen-sie-das-problem\/\">Wunschgutschein Fehler RDMx3<\/a><\/h3>\n<h2 data-path-to-node=\"6\"><span style=\"color: #800000;\"><b data-path-to-node=\"6\" data-index-in-node=\"0\">H\u00e4ufigste Ursachen<\/b><\/span><\/h2>\n<p data-path-to-node=\"7\">Die Ursachen lassen sich meist in drei Kategorien unterteilen \u2013 von einfach und g\u00fcnstig bis hin zu mechanischen Defekten:<\/p>\n<h3 data-path-to-node=\"8\"><span style=\"color: #000080;\"><b data-path-to-node=\"8\" data-index-in-node=\"0\">1. Undichtigkeiten im Ladeluftsystem (Sehr h\u00e4ufig)<\/b><\/span><\/h3>\n<p data-path-to-node=\"9\">Wenn die komprimierte Luft auf dem Weg vom Turbolader zum Motor entweicht, baut sich nicht genug Druck auf.<\/p>\n<ul data-path-to-node=\"10\">\n<li>\n<p data-path-to-node=\"10,0,0\">Risse, Marderkeile oder Porosit\u00e4t in den <b data-path-to-node=\"10,0,0\" data-index-in-node=\"41\">Ladeluftschl\u00e4uchen<\/b>.<\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"10,1,0\">Lose oder gebrochene <b data-path-to-node=\"10,1,0\" data-index-in-node=\"21\">Schlauchschellen<\/b>.<\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"10,2,0\">Undichtigkeiten oder Risse im <b data-path-to-node=\"10,2,0\" data-index-in-node=\"30\">Ladeluftk\u00fchler (LLK)<\/b>.<\/p>\n<\/li>\n<\/ul>\n<h3 data-path-to-node=\"11\"><span style=\"color: #000080;\"><b data-path-to-node=\"11\" data-index-in-node=\"0\">2. Probleme mit der Ladedruckregelung (Wastegate \/ VTG)<\/b><\/span><\/h3>\n<ul data-path-to-node=\"12\">\n<li>\n<p data-path-to-node=\"12,0,0\"><b data-path-to-node=\"12,0,0\" data-index-in-node=\"0\">Klemmendes Wastegate \/ Gest\u00e4nge:<\/b> Das Bypassventil am Turbolader schlie\u00dft nicht richtig, sodass die Abgase die Turbine nicht effektiv antreiben.<\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"12,1,0\"><b data-path-to-node=\"12,1,0\" data-index-in-node=\"0\">Defektes Magnetventil \/ Ladedruckregelventil (z. B. N75-Ventil):<\/b> Das Ventil steuert die Unterdruckdose nicht mehr korrekt an.<\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"12,2,0\"><b data-path-to-node=\"12,2,0\" data-index-in-node=\"0\">Por\u00f6se Unterdruckleitungen:<\/b> Kleine Schl\u00e4uche zur Steuerung des Turboladers verlieren Unterdruck.<\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"12,3,0\"><b data-path-to-node=\"12,3,0\" data-index-in-node=\"0\">Verkarkte VTG-Verstellung:<\/b> Bei Dieselfahrzeugen mit variabler Turbinengeometrie (VTG) k\u00f6nnen die Leitschaufeln durch Ru\u00df festklemmen.<\/p>\n<\/li>\n<\/ul>\n<h3 data-path-to-node=\"13\"><span style=\"color: #000080;\"><b data-path-to-node=\"13\" data-index-in-node=\"0\">3. Sensor- oder Turboladerdefekte<\/b><\/span><\/h3>\n<ul data-path-to-node=\"14\">\n<li>\n<p data-path-to-node=\"14,0,0\"><b data-path-to-node=\"14,0,0\" data-index-in-node=\"0\">Defekter Ladedrucksensor (MAP-Sensor):<\/b> Der Sensor misst falsch und meldet dem Steuerger\u00e4t zu Unrecht einen zu geringen Druck.<\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"14,1,0\"><b data-path-to-node=\"14,1,0\" data-index-in-node=\"0\">Mechanischer Turboladerschaden:<\/b> Verschlissene Lager, besch\u00e4digte Verdichter- oder Turbinenschaufeln (oft durch Fremdk\u00f6rper oder \u00d6lmangel).<\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"14,2,0\"><b data-path-to-node=\"14,2,0\" data-index-in-node=\"0\">Verstopfter Luftfilter oder Auspuff\/DPF:<\/b> Ein stark verstopfter Dieselpartikelfilter (DPF) oder Katalysator verhindert den Abgasstrom, den der Turbo zum Drehen braucht.<\/p>\n<\/li>\n<\/ul>\n<h2 data-path-to-node=\"16\"><span style=\"color: #800000;\"><b data-path-to-node=\"16\" data-index-in-node=\"0\">Empfohlenes Vorgehen zur Diagnose<\/b><\/span><\/h2>\n<ol start=\"1\" data-path-to-node=\"17\">\n<li>\n<h3 data-path-to-node=\"17,0,0\"><span style=\"color: #000080;\"><b data-path-to-node=\"17,0,0\" data-index-in-node=\"0\">Sicht- und H\u00f6rpr\u00fcfung (Schnelltest):<\/b><\/span><\/h3>\n<ul data-path-to-node=\"17,0,1\">\n<li>\n<p data-path-to-node=\"17,0,1,0,0\">Motor im Leerlauf laufen lassen und leicht Gas geben (falls eine zweite Person hilft).<\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"17,0,1,1,0\">Alle dicken Schl\u00e4uche zwischen Turbolader, Ladeluftk\u00fchler und Drosselklappe auf Risse, \u00d6lspuren oder Zischger\u00e4usche pr\u00fcfen.<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<li>\n<h3 data-path-to-node=\"17,1,0\"><span style=\"color: #000080;\"><b data-path-to-node=\"17,1,0\" data-index-in-node=\"0\">Nebeltest (<i data-path-to-node=\"17,1,0\" data-index-in-node=\"11\">Smoke Test<\/i>):<\/b><\/span><\/h3>\n<ul data-path-to-node=\"17,1,1\">\n<li>\n<p data-path-to-node=\"17,1,1,0,0\">Eine Werkstatt kann das Ladeluftsystem mit k\u00fcnstlichem Nebel unter Druck setzen. So werden selbst kleinste Haarrisse sofort sichtbar.<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<li>\n<h3 data-path-to-node=\"17,2,0\"><span style=\"color: #000080;\"><b data-path-to-node=\"17,2,0\" data-index-in-node=\"0\">Live-Daten auslesen:<\/b><\/span><\/h3>\n<ul data-path-to-node=\"17,2,1\">\n<li>\n<p data-path-to-node=\"17,2,1,0,0\">Mit einem Diagnoseger\u00e4t w\u00e4hrend einer Probefahrt den <b data-path-to-node=\"17,2,1,0,0\" data-index-in-node=\"53\">Soll-Ladedruck<\/b> mit dem <b data-path-to-node=\"17,2,1,0,0\" data-index-in-node=\"76\">Ist-Ladedruck<\/b> vergleichen.<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<li>\n<h3 data-path-to-node=\"17,3,0\"><span style=\"color: #000080;\"><b data-path-to-node=\"17,3,0\" data-index-in-node=\"0\">Pr\u00fcfung der Unterdruckschl\u00e4uche und der Verstellung:<\/b><\/span><\/h3>\n<ul data-path-to-node=\"17,3,1\">\n<li>\n<p data-path-to-node=\"17,3,1,0,0\">Pr\u00fcfen, ob sich das Gest\u00e4nge am Turbolader (Wastegate oder VTG-Dose) beim Starten des Motors leichtg\u00e4ngig bewegt.<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"<p>Der OBD-II-Fehlercode P0299 bedeutet: \u201eTurbolader\/Kompressor \u2013 Ladedruck zu niedrig\u201c (Turbocharger\/Supercharger Underboost Condition). Das Motorsteuerger\u00e4t (ECU) hat festgestellt, dass der vom Turbolader oder Kompressor erzeugte Ladedruck unter dem vom Steuerger\u00e4t berechneten&hellip;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"ai_generated_summary":"","footnotes":""},"categories":[6048],"tags":[],"class_list":["post-105203","post","type-post","status-publish","format-standard","hentry","category-error-fix"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.7 (Yoast SEO v27.7) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Der Fehlercode P0299 : &quot;Turbocharger \/ Supercharger Underboost Condition&quot; - Seminarsonly.com<\/title>\n<meta name=\"description\" content=\"Der OBD-II-Fehlercode P0299 bedeutet: \u201eTurbolader\/Kompressor \u2013 Ladedruck zu niedrig\u201c (Turbocharger\/Supercharger Underboost Condition).\" \/>\n<meta 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