{"id":304,"date":"2022-10-21T13:40:58","date_gmt":"2022-10-21T13:40:58","guid":{"rendered":"https:\/\/dan.dev.nathanbosch.nl\/?p=304"},"modified":"2023-03-30T08:28:58","modified_gmt":"2023-03-30T06:28:58","slug":"ddtsb-fault-code-p008b-high-pressure-pump","status":"publish","type":"post","link":"https:\/\/www.diagnosedan.com\/fr\/ddtsb-fault-code-p008b-high-pressure-pump\/","title":{"rendered":"PSA\/Opel\/Vauxhall 2014->Fault code stored: P008B"},"content":{"rendered":"
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PSA\/Opel\/Vauxhall 2014-> 1.6 BlueHdi \/ BlueInjection<\/span><\/span>\"\"<\/a><\/h1>

MIL activ\u00e9. Code d\u00e9faut enregistr\u00e9 :<\/span><\/span><\/h2>

P008B - Circuit de carburant basse pression : pression de carburant sup\u00e9rieure \u00e0 la valeur de r\u00e9f\u00e9rence<\/h2><\/div>
Nous avons vu r\u00e9cemment un nombre croissant de demandes concernant cette erreur, dont la cause \u00e9tait le clapet de retour de la pompe haute pression.<\/span><\/span><\/div>
Il n'y a pas vraiment d'informations OE sur la fa\u00e7on de mesurer si le d\u00e9faut est caus\u00e9 par la pompe basse pression ou la soupape de retour dans la pompe haute pression.<\/span><\/span><\/div>
Dus daarom hebben we ervoor gekozen om een \u200b\u200bauto binnen te halen en zelf op te meten.<\/span><\/span><\/div>
Page 1 sur 3.<\/span><\/span><\/div>
\u00a0<\/div>
\u00a0<\/div>

Proc\u00e9dure de d\u00e9pannage :<\/span><\/span>\"\"<\/a><\/h3>

La basse pression de carburant peut \u00eatre v\u00e9rifi\u00e9e via les mesures des param\u00e8tres de l'unit\u00e9 de commande du moteur, mais pour exclure que la basse pression ne mesure pas correctement, il est judicieux d'installer simultan\u00e9ment un manom\u00e8tre sur le circuit basse pression.<\/span><\/span>
Veuillez noter : La pression indiqu\u00e9e dans les mesures de param\u00e8tres est affich\u00e9e avec la pression atmosph\u00e9rique. Cela signifie que si 5 barres sont affich\u00e9es dans les mesures de param\u00e8tres, cela \u00e9quivaut \u00e0 4 barres sur le manom\u00e8tre.<\/span><\/span>
Dans le cas d'un circuit basse pression sans d\u00e9faut, les mesures des param\u00e8tres indiqueront env. 5 bars en basse pression de carburant et un signal PWM d'env. 27 % au contr\u00f4le de la pompe basse pression (mesur\u00e9e au ralenti).<\/span><\/span><\/p>

Pour d\u00e9terminer si la basse pression de carburant trop \u00e9lev\u00e9e est caus\u00e9e par la pompe basse pression ou la pompe haute pression, v\u00e9rifier le circuit de retour de carburant.<\/span><\/span><\/h3><\/div>

\u2022 Fixez un r\u00e9cipient au connecteur du tuyau de retour dans le compartiment moteur (pos. 1 sur la photo ci-dessous)
\u2022 D\u00e9marrez le moteur et laissez-le tourner au ralenti pendant 30 secondes exactement<\/p>

Dans un moteur sans d\u00e9faut, le d\u00e9bit de retour sera d'env. 500 ml.<\/p>

Si le d\u00e9bit de retour est nettement inf\u00e9rieur \u00e0 500 ml, le d\u00e9faut est souvent d\u00fb au fait que la vanne m\u00e9canique de r\u00e9gulation du d\u00e9bit de retour de la haute pressionLa pompe est bloqu\u00e9e en position ferm\u00e9e. Cette vanne est situ\u00e9e \u00e0 l'int\u00e9rieur de la pompe haute pression et ne peut pas \u00eatre remplac\u00e9e s\u00e9par\u00e9ment. Si le d\u00e9bit de retour est d'env. 500 ml ou plus, cela est souvent d\u00fb \u00e0 une pompe basse pression d\u00e9fectueuse.<\/span><\/p>

\"\"<\/a><\/h3>

Voici comment trouver un TSB comme celui-ci dans le DDTSB :<\/h4>

https:\/\/www.diagnosedan.com\/wp-content\/uploads\/2023\/03\/9001-video-ddtsb-1.mp4<\/a><\/video><\/div><\/p>

Vous voulez des informations comme celle-ci disponibles dans votre atelier ?<\/h4>

Aller \u00e0 WWW.DDTSB.COM\u00a0<\/a><\/h3><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"

21-03-2023. Derni\u00e8res nouvelles du DDTSB<\/p>","protected":false},"author":1,"featured_media":2894,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[41,1],"tags":[49,48,42,43,51,47],"class_list":["post-304","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-newsletter-ddtsb","category-uncategorized","tag-bluehdi","tag-citroen","tag-ddtsb","tag-diagnosedantsb","tag-p008b","tag-peugeot"],"acf":[],"yoast_head":"\nPSA\/Opel\/Vauxhall 2014->Fault code stored: P008B -<\/title>\n<meta name=\"description\" content=\"DDTSB Newsletter. Case study. PSA\/Opel 1.6 BlueHdi \/ BlueInjection. 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