Lambar kuskuren P20EE OBD2 - SCR NOx ingantaccen ingantaccen aiki a ƙasa da madaidaicin, banki 1

DTC P20EE - OBD-II Takardar bayanan

Lambar Kuskuren P20EE OBD2 - SCR NOx Ƙarfafa Ƙarfafa Ƙarfafa Ƙarfafa Bankin Ƙarfi 1

Menene lambar OBD2 - P20EE ke nufi?

Wannan sigar Lambar Matsalar Bincike ce (DTC) wacce ta dace da yawancin motocin OBD-II (1996 da sabuwa). Wannan na iya haɗawa, amma ba'a iyakance shi ba, Audi, Buick, Chevrolet, Ford, GMC, Mercedes-Benz, Subaru, Toyota, Volkswagen, da dai sauransu Duk da cewa matakan gyara na gaba ɗaya na iya bambanta dangane da shekarar da aka ƙera, yi, samfuri da watsawa sanyi. ...

Lokacin da aka adana P20EE a cikin motar dizal sanye take da OBD-II, wannan yana nufin cewa tsarin sarrafa wutar lantarki ya gano cewa ƙarfin ƙarfin kuzarin yana ƙasa da madaidaicin madaidaicin kewayon injin. Wannan takamaiman lambar tana aiki da mai canza catalytic (ko tarkon NOx) don bankin farko na injuna. Bank one shine rukunin injin da ke ɗauke da silinda lamba ɗaya.

Kodayake injunan diesel masu tsabta na zamani suna da fa'idodi da yawa akan injunan mai (musamman a cikin manyan motocin kasuwanci), su ma suna fitar da wasu iskar gas mai cutarwa fiye da sauran injunan. Mafi shahararrun waɗannan gurɓatattun gurɓatattun abubuwa sune ions nitrogen oxide (NOx).

Tsarin sake dawo da iskar Gas (EGR) yana taimakawa rage ƙimar NOx, amma da yawa daga cikin manyan injunan diesel na yau ba za su iya cika ƙaƙƙarfan ƙaƙƙarfan ƙaƙƙarfan ƙaƙƙarfan ƙawancen Tarayyar Amurka (US) ta amfani da tsarin EGR kawai ba. A saboda wannan dalili, an haɓaka tsarin SCR.

Tsarin SCR suna shigar da Fashin Haɗin Diesel (DEF) a cikin iskar gas ɗin da ke sama na mai jujjuyawar mahaifa ko tarkon NOx. Gabatarwa na DEF yana haɓaka zafin zafin iskar gas kuma yana ba da damar sinadarin aiki ya yi aiki sosai. Wannan yana haɓaka rayuwar mai haɓakawa kuma yana rage hayaƙin NOx.

Ana sanya sinadaran Oxygen (O2), NOx sensors da / ko firikwensin zafin jiki kafin da bayan mai kara kuzari don saka idanu kan zazzabi da ingancin sa. Duk tsarin SCS ana sarrafa shi ta hanyar PCM ko mai sarrafa kansa wanda ke sadarwa tare da PCM. In ba haka ba, mai sarrafawa yana lura da O2, NOx da firikwensin zafin jiki (da sauran abubuwan shiga) don ƙayyade lokacin da ya dace don allurar DEF. Ana buƙatar allurar DEF madaidaiciya don kiyaye zafin iskar gas a cikin abubuwan da aka yarda da su kuma don tabbatar da ingantaccen tacewar NOx.

Idan PCM ta gano cewa ingancin kuzari bai isa ba don mafi ƙarancin sigogi masu karɓa, za a adana lambar P20EE kuma fitilar mai nuna rashin aiki na iya haskakawa.

Menene tsananin p20ee DTC?

Duk wasu lambobin da aka adana masu alaƙa da SCR na iya sa tsarin SCR ya rufe. Lambar P20EE da aka adana yakamata a kula da ita da tsanani kuma yakamata a gyara da wuri. Idan ba'a gyara lambar da sauri ba, zai iya lalata mai mu'amalar kuzari.

Menene wasu alamomin lambar?

Alamomin lambar matsala P20EE na iya haɗawa da:

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

Wadanne dalilai na gama gari na lambar P20EE?

Dalilan wannan lambar na iya haɗawa da:

• Lahani O2, NOx ko firikwensin zafin jiki
• Broken tsarin SCR
• Injector SCR mara lahani
• Ba daidai ba ko rashin isasshen ruwa na DEF
• Bad diesel particulate filter (DPF)
• Fitowar hayaniya
• Gurbacewar mai
• Bad SCR mai kula ko kuskuren shirye -shirye
• Shashasha tana zubewa a gaban mai kara kuzari
• Shigar da abubuwan da ba su da asali ko kayan aiki masu inganci

Lambar kuskure P20EE

Gano abubuwan da ke haifar da lambar OBD2 - P20EE

Don bincikar DTC P20EE, mai fasaha dole ne:

1. Duba lambobin da ke cikin ECM kuma duba bayanan daskare don lambobin matsala.
2. Yi bitar rahotannin tarihin abin hawa don lambobin da suka danganci NOx da aka saita a baya.
3. Bincika hayakin da ake iya gani daga bututun shaye-shaye kuma duba tsarin shaye-shaye don yawo ko lalacewa.
4. Bincika kayan aikin bututun don tabbatar da cewa babu cikas.
5. Bincika waje na DPF ko SCR mai mu'amala mai motsi don wuta mai kashewa ko bayyanannun alamun lalacewa.
6. Bincika bututun cika DEF don ɗigogi, mutuncin hula, da dacewa da hula zuwa layin ruwa.
7. Bincika matsayin DTC a cikin ECM don tabbatar da cewa an kunna tsarin SCR.
8. Bincika maɓalli na maɓalli don alamun lalacewa ko yawan amfani da mai saboda ɓarnawar injector ko gazawar haɓakar turbo.

Menene matakan magance matsalar P20EE?

Idan an adana wasu lambobin SCR ko sharar iska ko lambobin zazzabi na gas, yakamata a share su kafin yunƙurin tantance P20EE da aka adana.

Duk wani ɓoyayyen ɓoyayyen ruwa a gaban mai jujjuyawar mahaɗan dole ne a gyara shi kafin ƙoƙarin gano irin wannan lambar.

Gano lambar P20EE zai buƙaci samun damar na'urar sikirin bincike, volt / ohmmeter na dijital (DVOM), thermometer infrared tare da mai nuna laser, da kuma tushen bayanan bincike don takamaiman tsarin SCR.

Nemo Bulletin Sabis na Fasaha (TSB) wanda yayi daidai da shekarar ƙira, ƙira da ƙirar abin hawa; kazalika da ƙaurawar injin, lambobin da aka adana, da alamun da aka gano na iya ba da bayanan bincike masu amfani.

Fara ganewar asali ta hanyar duba tsarin allurar SCR na gani, firikwensin zazzabi na gas, ƙoshin NOx, da kayan haɗin firikwensin oxygen da masu haɗawa (02). Wayoyin da aka ƙone ko suka lalace da / ko masu haɗawa dole ne a gyara ko musanya su kafin a ci gaba.

Sannan nemo mahaɗin binciken motar kuma toshe cikin na'urar daukar hotan takardu. Maido da duk lambobin da aka adana da kuma bayanan daskarar da bayanan da ke haɗe kuma rubuta wannan bayanin kafin share lambobin. Sannan gwada gwajin abin hawa har sai PCM ya shiga yanayin shiri ko an share lambar.

Idan PCM ya shiga yanayin shirye -shirye, lambar ba ta wuce -wuri kuma tana iya zama da wahala a gano cutar a wannan lokacin. Yanayin da ya ba da gudummawa ga riƙe da lambar na iya buƙatar yin muni kafin a iya gano cutar.

Idan lambar ta sake farawa nan da nan, bincika tushen bayanan abin hawan ku don zane -zanen shinge na bincike, makullan haɗi, fuskokin mai haɗawa, da hanyoyin gwajin abubuwan da keɓaɓɓun bayanai. Za a buƙaci wannan bayanin don kammala matakai na gaba a binciken ku.

Kula da kwararar bayanai na na'urar daukar hotan takardu don kwatanta karatun abubuwan firikwensin iskar gas (kafin da bayan tsaftacewa) O2, NOx da yanayin zafi tsakanin tubalan injin. Idan an sami rashin daidaituwa, bincika madaidaitan firikwensin ta amfani da DVOM. Na'urorin firikwensin da ba su dace da ƙayyadaddun masana'anta ba ya kamata a ɗauka a matsayin marasa lahani.

Idan duk na'urori masu auna sigina da da'irori suna aiki yadda yakamata, yi zargin cewa sinadarin yana da lahani ko kuma tsarin SCR baya cikin tsari.

• Tabbatar cewa tafkin DEF ya cika da madaidaicin ruwa kuma bai gurɓata ta kowace hanya ba.

Kurakurai na gama-gari na P20EE

Waɗannan su ne wasu kuskuren gama gari da mai fasaha zai iya yi yayin bincika lambar P20EE:

• Rasa Bayanan Daskarewar Bayanai a cikin ECM
• Ba a bincika rahoton tarihin mota don lambobi masu alaƙa da SCR ba
• Gyara matsala ɗaya ba tare da cikakkiyar fahimtar yadda take da alaƙa da wasu matsalolin da ke cikin tsarin ba.

Menene gyare-gyare zai iya gyara lambar P20ee?

A ƙasa akwai hanyoyin magance wannan matsalar:

• Canjin canjin yanayin DEF
• Sauya firikwensin NOx
• Maye gurbin sashin tacewa na DPF
• Maye gurbin kayan aikin wayoyi masu alaƙa da tsarin SCR
• Sauya Lallace ko Rufewar SCR Catalyst
• Maye gurbin tsatsa ko fashe tashoshi
• Maye gurbin lalacewa ko ɓarna allura
• Turbocharger haɓaka firikwensin shigarwa

Lambobin kuskuren OBD2 masu alaƙa:

P20EE yana da alaƙa da kuma yana iya kasancewa tare da waɗannan lambobi masu zuwa:

• P2031 - Rashin aikin SCR
• P2032 - Rashin aiki na bawul ɗin sauyawa na tsarin SCR
• P2137 - Low ƙarfin lantarki a gaban oxygen firikwensin (HO2S) kewaye, banki 1, firikwensin 1
• P2138 - Sensor Oxygen Sensor (HO2S) Babban Bankin Wutar Lantarki 1

ƙarshe

A ƙarshe, lambar P20EE DTC ce wacce ke da alaƙa da Ingantaccen Ƙarfafawa na SCR NOx Ƙarƙashin Laifi. Wannan na iya haifar da al'amura da dama, amma mafi yawan masu laifi sune matsaloli tare da sinadarin tace DPF da ruwan DEF. Ya kamata mai fasaha ya bincika waɗannan dalilai masu yuwuwa kuma ya duba littafin sabis don tantance daidai da gyara wannan lambar.