P20BD Reductant Heater Control Circuit B / Buɗe

P20BD Reductant Heater Control Circuit B / Buɗe

Bayanan Bayani na OBD-II

Reductant hita kula kewaye B / bude

Mene ne wannan yake nufi?

Wannan Lambar Matsalar Bincike (DTC) lambar watsawa ce gabaɗaya kuma ta shafi yawancin dizal ɗin OBD-II (1996 da sabuwa). Wannan na iya haɗawa, amma ba'a iyakance shi ba, Ford, Mercedes Benz, Sprinter, Audi, Ram, Chevrolet, Dodge, BMW, GMC, da dai sauransu Duk da yanayin gabaɗaya, ainihin matakan gyara na iya bambanta dangane da shekarar ƙira, iri , samfuran watsawa da daidaitawa. ...

Lambar da aka adana P20BD tana nufin module controltrain control module (PCM) bai gano wani ƙarfin lantarki akan da'irar sarrafawa ba don mai rage wutar lantarki a kan jirgin da harafin B. ya nuna. . Jagorar bita don tantance sarkar B daidai don aikace -aikacen ku.

Tsarin mai haɓaka yana da alhakin rage (galibi) duk sauran abubuwan da ke fitar da hayaƙi, kodayake wasu aikace -aikacen kuma suna sanye da tarkon NOx.

Tsarin sake dawo da iskar Gas (EGR) ya ɗauki wani mataki na rage fitar da hayaƙi na NOx. Koyaya, manyan injunan diesel na yau ba za su iya cika ƙaƙƙarfan ƙaƙƙarfan ƙaƙƙarfan ƙaƙƙarfan ƙawancen tarayya (US) tare da kawai EGR, DPF / catalytic converter, da NOx trap. A saboda wannan dalili, an ƙirƙiri tsarin rage yawan kuzari (SCR).

Tsarin SCR suna allurar mahaɗan rage mai ko Diesel Exhaust Fluid (DEF) a cikin iskar gas ɗin da ke saman matattara mai rarrabuwa da / ko mai jujjuyawa. Allurar da aka lissafa daidai DEF tana ɗaga zafin zafin abun tace kuma tana ba shi damar yin aiki da inganci. Wannan yana ƙara tsawon rayuwar sabis na abubuwan tacewa kuma yana taimakawa rage fitar da gurɓatattun iskar gas mai haɗari zuwa cikin yanayi.

Duk tsarin SCS ana sa ido kuma ana sarrafa shi ta PCM ko mai sarrafa kansa (wanda ke hulɗa da PCM). A kowane hali, mai kulawa yana lura da O2, NOx da firikwensin zafin zafin gas (gami da sauran abubuwan shiga) don ƙayyade lokacin da ya dace don allurar DEF (rage). Ana buƙatar allurar DEF madaidaiciya don kiyaye zafin iskar gas a cikin abubuwan da aka yarda da su da kuma inganta tacewar gurɓatattun abubuwa.

Ana amfani da rage dumama mai daskarewa don hana injin fitar da injin dizal daga daskarewa a matsanancin yanayin zafi. Waɗannan masu hura wutar galibi suna cikin tafkin DEF da / ko a cikin bututu na samar da bututun wakili.

Idan PCM ya gano ƙarancin ƙarfin lantarki akan tsarin sarrafa wutar lantarki mai ragewa B, za a adana lambar P20BD kuma fitilar mai nuna rashin aiki na iya haskakawa.

Za a iya rage dumamar dumbin wakilai a cikin tankin DEF (misalin da aka nuna a nan):

Menene tsananin wannan DTC?

Lambar P20BD da aka adana yakamata a kula da shi da mahimmanci kuma yakamata a warware shi da wuri -wuri. Ana iya kashe tsarin SCR saboda wannan. Lalacewar mai haɓakawa na iya faruwa idan ba a gyara yanayin da ya taimaka ga dorewar lambar ba a kan kari.

Menene wasu alamomin lambar?

Alamomin lambar matsala P20BD na iya haɗawa da:

• Rage aikin injiniya
• Bakin hayaƙi mai yawa daga shaye -shayen abin hawa
• Rage ingancin mai
• Sauran lambobin da suka shafi SCR

Mene ne wasu abubuwan da ke haifar da lambar?

Dalilan wannan lambar na iya haɗawa da:

• Poor ragewa dumama
• Buɗe ko gajeriyar madaidaiciya a cikin ragin sarrafa madaidaicin wakili
• Rage firikwensin zafin jiki na m
• Bad SCR / PCM mai sarrafawa ko kuskuren shirye -shirye

Menene wasu matakai don warware matsalar P20BD?

Kuna buƙatar samun damar na'urar daukar hoto, volt / ohmmeter na dijital (DVOM), da tushen bayanan bincike na musamman na abin hawa don gano lambar P20BD.

Idan za ku iya samun Bulletin Sabis na Fasaha (TSB) daidai da shekarar kera, kera da samfurin abin hawa; kazalika da ƙaurawar injin, lambar da aka adana / lambobin da alamomin da aka gano, yana iya ba da bayanan bincike masu amfani.

Yakamata ku fara ganewar asali ta hanyar duba kayan haɗin gwiwa da masu haɗin tsarin dumama mai ragewa. Wayoyin da aka ƙone ko suka lalace da / ko masu haɗawa dole ne a gyara ko musanya su kafin a ci gaba.

Sannan haɗa na'urar daukar hotan takardu zuwa soket ɗin abin hawa da dawo da duk lambobin da aka adana da kuma daskare bayanan firam ɗin daidai. Yi bayanin wannan bayanin kafin share lambobin kuma gwada tuƙin abin hawa har sai PCM ta shiga yanayin shirye ko an sake saita lambar.

Lambar tana tsaka -tsaki kuma tana iya zama da wahala a tantance (a halin yanzu) idan PCM ta shiga cikin yanayin shirye. A wannan yanayin, yanayin da ya ba da gudummawa ga riƙe da lambar na iya buƙatar yin muni kafin a iya yin cikakken bincike.

Idan lambar ta sake saitawa, bincika tushen bayanan abin hawan ku don zane -zanen toshe na bincike, makullin mai haɗawa, ra'ayoyin fuska mai haɗawa, da hanyoyin gwaji da ƙayyadaddun abubuwa. Kuna buƙatar wannan bayanin don kammala mataki na gaba a ganewar ku.

Yi amfani da DVOM don bincika samar da wutar lantarki na tsarin SCR / sarrafawa. Bincika fuses tare da da'irar da aka ɗora don gujewa ɓarna. Idan an sami ikon da ya dace (ƙarfin baturi) da da'irar ƙasa, yi amfani da na'urar daukar hotan takardu don kunna mai rage zafi / s kuma duba ƙarfin fitowar da'irar sarrafawa. Idan ƙarfin lantarki bai isa ba, yi zargin cewa mai sarrafa yana da lahani ko yana da kuskuren shirye -shirye.

Idan da'irar wutar lantarki mai fitarwa tana cikin ƙayyadaddun bayanai, yi amfani da DVOM don gwada kayan rage dumama wakili a cikin tambaya. Idan mai dumama bai cika ƙayyadaddun masana'anta ba, ana zargin ya gaza.

• Idan an fallasa wannan lambar a yanayin zafi, yi zargin cewa kuskuren shirin ya faru.

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Kuna buƙatar ƙarin taimako tare da lambar P20BD ɗin ku?

Idan har yanzu kuna buƙatar taimako tare da DTC P20BD, aika tambaya a cikin sharhin da ke ƙasa wannan labarin.

NOTE. An ba da wannan bayanin don dalilai na bayanai kawai. Ba a yi nufin amfani da shi azaman shawarar gyara ba kuma ba mu da alhakin duk wani mataki da za ku ɗauka a kan kowane abin hawa. Duk bayanan da ke wannan shafin ana kiyaye su ta haƙƙin mallaka.