P20EE OBD2 kodhi yekukanganisa - SCR NOx inosimudzira kushanda pazasi pechikumbaridzo, bhangi 1

DTC P20EE - OBD-II Datasheet

P20EE OBD2 Kukanganisa Kodhi - SCR NOx Catalyst Kubudirira Pazasi Threshold Bank 1

Ko iyo OBD2 kodhi - P20EE inorevei?

Iyi generic Diagnostic Dambudziko Kodhi (DTC) inoshanda kune mazhinji OBD-II mota (1996 uye nyowani). Izvi zvinogona kusanganisira, asi hazvirevi kune, Audi, Buick, Chevrolet, Ford, GMC, Mercedes-Benz, Subaru, Toyota, Volkswagen, nezvimwe. Kunyange hazvo matanho ekugadzirisa akawandisa achisiyana zvichienderana negore rekugadzira, kugadzira, modhi uye kufambisa kumisikidza. ...

Kana P20EE ichichengetwa mumotokari yedhiziri yeOBD-II, zvinoreva kuti powertrain control module yaona kuti catalyst performance iri pazasi pechikumbaridzo cheimwe injini renji. Iyi kodhi chaiyo inoshanda kune inoshandura inoshandura (kana NOx trap) yebhangi rekutanga reinjini. Bank one ndiro boka reinjini rine nhamba imwe humburumbira.

Kunyangwe zvanhasi injini dzemoto dzakachena dzedhiziri dzine zvazvakanakira pamusoro peinjini dzepeturu (kunyanya mumarori ekutengesa), dzinowanzo buritsa mamwe gasi ekukuvadza anokuvadza kupfuura mamwe mainjini. Iyo inonyanya kuzivikanwa yeiyi inosvibisa yakasvibisa iitrogen oxide (NOx) ions.

Exhaust Gesi Kutenderera (EGR) masisitimu anobatsira zvakanyanya kudzikisa hutachiona hweNox, asi mazhinji enjini dzanhasi dzedhiziri dzisingakwanise kusangana nemitemo inodzikisira yeUS federal (US) vachishandisa EGR system yega. Neichi chikonzero, masystem eSCR akagadzirwa.

MaSCR masisitimu anojekesa Diesel Exhaust Fluid (DEF) mukati memagetsi ekumusoro akakwira kumusoro kwechinoshandura chinoshandura kana NOx musungo. Kuunzwa kweEF kunosimudza tembiricha yemweya wekudzimisa uye inobvumidza iyo inobatsira kuti ishande zvakanyanya. Izvi zvinowedzera hupenyu hwekubatsira uye zvinoderedza kuburitswa kweNox.

Okisijeni (O2) sensors, NOx sensors uye / kana tembiricha maseru anoiswa pamberi uye shure kwechinokonzera kutarisa tembiricha yayo uye kugona. Iyo yese SCS system inodzorwa nePCM kana inomira-yega mutungamiriri anotaurirana nePCM. Zvikasadaro, mutungamiriri anotarisa iyo O2, NOx uye tembiricha sensors (pamwe nezvimwe zvigadzirwa) kuona nguva yakakodzera yeiyo jekiseni reEF. Precision DEF jekiseni inodiwa kuchengetedza iyo yekuzadza gasi tembiricha mukati meyakagamuchirwa parameter uye kuona yakaringana NOx kusefa.

Kana iyo PCM ikaona kuti chinokonzeresa mashandiro hachikwane pamiyero isingatenderwe, P20EE kodhi inochengetwa uye mwenje wekusashanda ungavhenekera.

Ndeipi kuomarara kwep20ee DTC?

Chero makodhi akachengetwa ane chekuita neSCR anogona kuita kuti SCR system ivhare. Yakachengetwa P20EE kodhi inofanirwa kubatwa seyakakomba uye inofanirwa kugadziriswa nekukurumidza sezvinobvira. Kana iyo kodhi isina kugadziriswa nekukurumidza, inogona kukuvadza iyo catalytic converter.

Ndezvipi zvimwe zvezviratidzo zvekodhi?

Zviratidzo zveP20EE kodhi yekutambudzika inogona kusanganisira:

• Hutsi hutema hwakawandisa kubva mumotokari chiutsi
• Yakaderedzwa injini kuita
• Yakadzikira mafuta kunyatsoshanda
• Mamwe akachengetwa SCR uye emodhi macode

Ndezvipi zvimwe zvezvikonzero zvinowanzoitika zveP20EE kodhi?

Zvikonzero zveiyi kodhi zvinogona kusanganisira:

• Inokanganisa O2, NOx kana tembiricha sensor
• Yakaputsika SCR system
• Yakakanganisa SCR injector
• Isirizvo kana kukwana DEF fluid
• Bad diesel particulate filter (DPF)
• Exhaust inobuda
• Kusvibiswa kwemafuta
• Yakashata SCR controller kana programming kukanganisa
• Kununura kunodonha pamberi pechigadziro
• Kuisirwa kweisiri-yepakutanga kana yepamusoro-inoshanda yezvinhu zveiyo chiutsi system

P20EE Fault Code

Kuongorora zvikonzero zveiyo OBD2 kodhi - P20EE

Kuti uongorore DTC P20EE, nyanzvi inofanirwa:

1. Skena macode muECM uye tarisa iyo yechando furemu data yemakodhi ematambudziko.
2. Wongorora nhoroondo yemotokari mishumo kune yakambosetwa NOx ine hukama makodhi.
3. Tarisa utsi hunoonekwa kubva papombi yekuburitsa uye ongorora iyo exhaust system kuti inodonha kana kukuvadzwa.
4. Tarisa pahose fittings kuti uone kuti hapana zvipingaidzo.
5. Ongorora kunze kweDPF kana SCR catalytic converter kune wakadzimwa murazvo kana zviratidzo zviri pachena zvekukuvara.
6. Ongorora iyo DEF yezadza chubhu yekuvuza, chivharo kutendeseka, uye kwakaringana chivharo kumutsara wemvura.
7. Tarisa mamiriro eDTC muECM kuona kuti SCR system inogoneswa.
8. Tarisa makiyi einjini ma paramita ezviratidzo zvekukuvadzwa kana kunyanyisa kushandisa mafuta nekuda kweinjector misfire kana turbo boost kutadza.

Ndeapi matanho ekugadzirisa matambudziko eP20EE?

Kana mamwe maCR kana mafirita emodhi emodhi kana anodziya magasi tembiricha akachengetwa, anofanirwa kujekeswa vasati vaedza kuongorora P20EE yakachengetwa.

Chero ipi neipi yekudonha inodonha pamberi pechinoshandura chinogadziriswa chinofanira kugadziriswa usati waedza kuongorora iyi mhando yekodhi.

Kuongorora P20EE kodhi kunoda kuwanikwa kune yekuongorora scanner, digital volt / ohmmeter (DVOM), infrared thermometer ine laser pointer, uye sosi yekuziva ruzivo rweyako yakatarwa SCR system.

Tsvaga yeTechnical Service Bulletin (TSB) inoenderana negore rekugadzira, kugadzira uye modhi yemotokari; pamwe neinjini yekufambisa, makodhi akachengetwa, uye zviratidzo zvakaonekwa zvinogona kupa ruzivo rwakakosha rwekuongorora.

Kutanga kuongororwa nekutarisa kuongorora iyo SCR jekiseni system, pedza gasi tembiricha sensors, NOx sensors, uye oksijeni sensor harnesses uye zvinongedzo (02). Yatsva kana yakakuvara wiring uye / kana zvinongedzo zvinofanirwa kugadziriswa kana kutsiviwa usati waenderera.

Wobva watsvaga iyo yekuongorora mota yekubatanidza uye plug mune iyo scanner. Dzosera makodhi ese akachengetedzwa uye inosanganisirwa dhizaini yedhata uye nyora ruzivo urwu pasi usati wabvisa macode. Wobva waedza kutyaira mota kudzamara PCM yapinda yekugadzirira mamiriro kana kodhi yadzimwa.

Kana iyo PCM ikapinda yakagadzirira modhi, kodhi iri yepakati uye inogona kuve yakanyanya kunetsa kuongorora panguva ino. Mamiriro ezvinhu akakonzera kuchengetwa kwekodhi angangoda kuwedzera kusati kwaongororwa.

Kana iyo kodhi ikatangazve nekukasira, tsvaga yako mota ruzivo sosi yekuongorora ekuvharisa madhayagiramu, chinongedzo pinouts, chinongedzo kumeso, uye chikamu chekuyedza maitiro uye maratidziro. Ruzivo urwu runodikanwa kuti upedze nhanho dzinotevera mukuongororwa kwako.

Tarisa iko kuyerera kwedata scanner kuenzanisa kuverenga kweanopedza gasi sensors (usati uye mushure mekuchenesa) O2, NOx uye tembiricha pakati peinjini mabhuroko. Kana zvisingaenderani zvikawanikwa, tarisa sensors zvinoenderana uchishandisa iyo DVOM. Maseru asingasviki nemagadzirirwo emugadziri anofanirwa kutariswa seakaremara.

Kana ma sensors ese nematunhu ari kushanda nemazvo, fungidzira kuti chinhu chinobatsira chakakanganisika kana kuti iyo SCR system iri kunze kwehurongwa.

• Ita shuwa kuti DEF dura rakazadzwa nemvura chaiyo uye haina kusvibiswa nenzira ipi zvayo.

Zvakajairwa P20EE Kugadzirisa Zvikanganiso

Zvinotevera ndezvimwe zvinowanzoitika zvikanganiso zvinogona kuitwa nenyanzvi pakuongorora P20EE kodhi:

• Yakashaikwa Yemahara Yemahara Yedata Tarisa muECM
• Chirevo chenhoroondo yemotokari haina kutariswa kune SCR ine hukama makodhi
• Kugadzirisa dambudziko rimwe chete pasina kunyatsonzwisisa kuti rinobatana sei nemamwe matambudziko muhurongwa.

Ndezvipi zvinogadzirisa zvinogona kugadzirisa kodhi P20ee?

Pazasi pane mhinduro dzinogona kugadzirisa dambudziko iri:

• DEF fluid shanduko
• NOx sensor kutsiva
• Kutsiva iyo DPF sefa chinhu
• Kutsiva iyo wiring harness yakabatana neiyo SCR system
• Kutsiva Yakakuvadzwa kana Yakavharwa SCR Catalyst
• Kutsiva nzvimbo dzine ngura kana dzakatsemuka
• Kutsiva majekiseni akakuvadzwa kana asina kupfura
• Turbocharger inowedzera sensor yekuisa

Inoenderana OBD2 kukanganisa makodhi:

P20EE yakabatana uye inogona kuperekedzwa nemakodhi anotevera:

• P2031 - Kusashanda SCR
• P2032 - Kusashanda kweiyo switching valve yeSCR system
• P2137 - Yakaderera voltage pamberi peokisijeni sensor (HO2S) dunhu, bhangi 1, sensor 1
• P2138 - Front Heated Oxygen Sensor (HO2S) Circuit High Voltage Bank 1

mhedziso

Mukupedzisa, kodhi P20EE iDTC ine hukama neSCR NOx Catalyst Efficiency Under Threshold kukanganisa. Izvi zvinogona kukonzerwa nenyaya dzinoverengeka, asi zvinonyanya kukonzera matambudziko neiyo DPF sefa chinhu uye DEF fluid. Nyanzvi inofanirwa kutarisa izvi zvingakonzeresa uye tarisa bhuku rebasa kuti rinyatso ongorora uye kugadzirisa iyi kodhi.