Khodi yolakwika ya P20EE OBD2 - SCR NOx chothandizira chothandizira pansi pa malire, banki 1

Zithunzi za DTC P20EE-OBD-II

P20EE OBD2 Error Code - SCR NOx Catalyst Efficiency Pansi pa Threshold Bank 1

Kodi code ya OBD2 - P20EE imatanthauza chiyani?

Iyi ndi generic Diagnostic Trouble Code (DTC) yogwiritsidwa ntchito pamagalimoto ambiri a OBD-II (1996 ndi atsopano). Izi zitha kuphatikizira, koma sikuchepera ku, Audi, Buick, Chevrolet, Ford, GMC, Mercedes-Benz, Subaru, Toyota, Volkswagen, ndi zina zambiri. kasinthidwe kasinthidwe. ...

P20EE ikasungidwa m'galimoto ya dizilo yokhala ndi OBD-II, zikutanthauza kuti gawo lowongolera la powertrain lazindikira kuti chothandizira chili pansi pamlingo wina wa injini. Khodi iyi imagwira ntchito ku chosinthira chothandizira (kapena NOx trap) kubanki yoyamba yamainjini. Bank one ndi gulu la injini lomwe lili ndi silinda yoyamba.

Ngakhale injini zamakono zoyaka moto za dizilo zili ndi zabwino zambiri kuposa injini zamafuta (makamaka m'magalimoto ogulitsa), zimatulutsanso mpweya wina wowopsa kuposa ma injini ena. Zowonongeka kwambiri za zowononga izi ndi ayitrogeni oxide (NOx) ayoni.

Machitidwe a Exhaust Gas Recirculation (EGR) amathandizira kuchepetsa kutulutsa kwa NOx, koma ma injini ambiri amakono a dizilo sangakwaniritse miyezo yovuta ya US federal (US) pogwiritsa ntchito dongosolo la EGR lokha. Pachifukwa ichi, makina a SCR apangidwa.

Makina a SCR amalowetsa Dizilo Exhaust Fluid (DEF) m'mafuta otaya omwe ali kumtunda kwa chosinthira chothandizira kapena msampha wa NOx. Kukhazikitsidwa kwa DEF kumakweza kutentha kwa mpweya wa utsi ndikuloleza othandizira kuti azigwira bwino ntchito. Izi zimakulitsa moyo wothandizira ndikuchepetsa kutulutsa kwa NOx.

Masensa a oxygen (O2), masensa a NOx ndi / kapena masensa otenthetsera amaikidwa isanachitike komanso itatha chothandizira kuyang'anira kutentha kwake ndi magwiridwe antchito. Dongosolo lonse la SCS limayang'aniridwa ndi PCM kapena wolamulira payekha yemwe amalumikizana ndi PCM. Kupanda kutero, wowongolera amayang'anira O2, NOx ndi masensa otentha (komanso zolowetsa zina) kuti adziwe nthawi yoyenera ya jakisoni wa DEF. Precision DEF jakisoni amafunika kuti mpweya wotentha uwonongeke m'magawo ovomerezeka ndikuwonetsetsa kusefera kwa NOx.

Ngati PCM itazindikira kuti chothandizira chake sichikwanira magawo ochepa ovomerezeka, nambala ya P20EE idzasungidwa ndipo nyali yowunikira ingayatse.

Kodi kuopsa kwa p20ee DTC ndi chiyani?

Makhodi aliwonse osungidwa okhudzana ndi SCR angapangitse makina a SCR kuzimitsa. Khodi ya P20EE yosungidwa iyenera kuonedwa ngati yofunika kwambiri ndipo iyenera kukonzedwa posachedwa. Ngati codeyo sinakonzedwe mwachangu, ikhoza kuwononga chosinthira chothandizira.

Kodi zina mwazizindikiro za code ndi ziti?

Zizindikiro za vuto la P20EE zingaphatikizepo:

• Utsi wakuda kwambiri wakutha kwa galimoto
• Kuchepetsa ntchito ya injini
• Kuchepetsa mafuta
• Ma code ena osungidwa a SCR ndi umuna

Kodi zina mwazomwe zimayambitsa kachidindo ka P20EE ndi ziti?

Zifukwa za code iyi zitha kuphatikizira izi:

• Cholakwika O2, NOx kapena sensa yotentha
• Wosweka dongosolo SCR
• Woperewera SCR injector
• Madzi olakwika kapena osakwanira a DEF
• Sefa yoyipa ya dizilo (DPF)
• Kutulutsa kwautsi
• Kuwonongeka kwamafuta
• Woyang'anira SCR woyipa kapena pulogalamu yolakwika
• Kutulutsa kutayikira patsogolo pa chothandizira
• Kukhazikitsa kosakhala koyambirira kapena machitidwe apamwamba otulutsa utsi

P20EE Fault Code

Kuzindikira zomwe zimayambitsa nambala ya OBD2 - P20EE

Kuti muzindikire DTC P20EE, katswiri ayenera:

1. Jambulani ma code mu ECM ndikuyang'ana deta yoyimitsa yamakhodi amavuto.
2. Onaninso malipoti a mbiri yamagalimoto a ma code okhudzana ndi NOx omwe adakhazikitsidwa kale.
3. Yang'anani utsi wowoneka kuchokera ku chitoliro cha utsi ndikuyang'ana makina otulutsa mpweya ngati akutuluka kapena kuwonongeka.
4. Yang'anani zoyikapo payipi kuti muwonetsetse kuti palibe zopinga.
5. Yang'anani kunja kwa DPF kapena SCR chosinthira chothandizira kuti muwone lawi lozimitsa kapena zizindikiro zowoneka bwino za kuwonongeka.
6. Yang'anani chubu lodzaza la DEF kuti likudontha, kukhulupirika kwa kapu, komanso kokwanira kwa kapu mpaka mzere wamadzimadzi.
7. Yang'anani momwe DTC ilili mu ECM kuti muwonetsetse kuti dongosolo la SCR layatsidwa.
8. Yang'anani magawo ofunikira a injini kuti muwone zizindikiro zakuwonongeka kapena kugwiritsa ntchito mafuta mopitilira muyeso chifukwa cha kuwonongeka kwa jekeseni kapena kulephera kwa turbo boost.

Kodi njira zothetsera mavuto ndi ziti za P20EE?

Ngati zida zina za SCR kapena zotulutsa mpweya kapena mpweya wotulutsa mpweya amasungidwa, ayenera kuyeretsedwa asanayese kupeza P20EE yosungidwa.

Kutulutsa kulikonse kutuluka patsogolo pa chosinthira chothandizira kuyenera kukonzedwa musanayese kupeza mtundu wamtunduwu.

Kuzindikira nambala ya P20EE kudzafuna kulumikizana ndi makina ojambulira matenda, digito volt / ohmmeter (DVOM), infrared thermometer yokhala ndi pointer ya laser, komanso gwero lazidziwitso lazomwe mungafotokozere za SCR yanu.

Sakani Technical Bulletin (TSB) yomwe ikufanana ndi chaka chopanga, kupanga ndi mtundu wagalimoto; komanso kusamutsidwa kwa injini, ma code osungidwa, ndi zizindikilo zomwe zitha kupezeka zimatha kukupatsirani chidziwitso chazidziwitso chazidziwitso.

Yambitsani matendawa poyang'ana mawonekedwe a jakisoni wa SCR, kutulutsa masensa otenthetsera gasi, masensa a NOx, ndi zingwe zamagetsi zamagetsi ndi zolumikizira (02). Mawaya owotcha kapena owonongeka ndi / kapena zolumikizira ayenera kukonzedwa kapena kusinthidwa musanapite.

Kenako pezani cholumikizira chosinthira galimoto ndikuyika sikani. Pezani ma code onse osungidwa ndi zofananira za chimango ndikulemba izi musanachotsere ma code. Kenako yesani kuyendetsa galimotoyo mpaka PCM itayamba kukonzekera kapena nambala yake yachotsedwa.

Ngati PCM ikalowererapo, nambala yake ndiyapakatikati ndipo zitha kukhala zovuta kuzizindikira pakadali pano. Zinthu zomwe zidapangitsa kuti codeyo isungidwe zitha kufunikira kukulirakulira asanadziwike.

Ngati nambala yanu ikukhazikikanso nthawi yomweyo, fufuzani gwero lazidziwitso zamagalimoto anu kuti mupeze zojambulidwa, zophatikizira zolumikizira, nkhope zolumikizira, ndi njira zoyeserera zigawo ndi malongosoledwe. Izi zidzafunika kuti mutsirize masitepe otsatirawa mukazindikira.

Onaninso kuyenda kwa sikani kuti mufananize kuwerengedwa kwa zotulutsa mpweya (musanayeretsere komanso mutatha kuyeretsa) O2, NOx ndi kutentha pakati pa injini. Ngati zosagwirizana zikupezeka, yang'anani masensa ofanana omwe akugwiritsa ntchito DVOM. Zosintha zomwe sizikugwirizana ndi zomwe wopanga akuyenera kuziona ngati zopanda pake.

Ngati masensa onse ndi ma circuits akugwira bwino ntchito, ganizirani kuti chothandizira chimakhala cholakwika kapena kuti dongosolo la SCR latha.

• Onetsetsani kuti damu la DEF ladzaza ndimadzimadzi oyenera ndipo silidetsedwa mwanjira iliyonse.

Zolakwika Zosauka za P20EE

Zotsatirazi ndi zina mwazolakwitsa zomwe katswiri amatha kupanga akazindikira nambala ya P20EE:

• Kuwona Kwama Frame Frame Kukusowa mu ECM
• Lipoti la mbiri yamagalimoto silinasankhidwe ma code okhudzana ndi SCR
• Kukonza vuto limodzi osamvetsetsa bwino momwe limakhudzira zovuta zina mudongosolo.

Ndi kukonza kotani komwe kungakonze P20ee?

M'munsimu muli njira zothetsera vutoli:

• Kusintha kwamadzi a DEF
• Kusintha kwa sensor ya NOx
• Kusintha chinthu chosefera cha DPF
• Kusintha kwa waya wolumikizana ndi dongosolo la SCR
• Kusintha SCR Catalyst Yowonongeka kapena Yotsekedwa
• Kusintha ma terminals a dzimbiri kapena osweka
• Kusintha majekeseni owonongeka kapena olakwika
• Kukhazikitsa kwa sensor ya Turbocharger

Makhodi olakwika okhudzana ndi OBD2:

P20EE imalumikizidwa ndipo imatha kutsagana ndi ma code awa:

• P2031 - Kusokonekera kwa SCR
• P2032 - Kuwonongeka kwa valavu yosinthira ya SCR system
• P2137 - Voltage yotsika kutsogolo kwa sensa ya okosijeni (HO2S), banki 1, sensor 1
• P2138 - Front Heated Oxygen Sensor (HO2S) Circuit High Voltage Bank 1

Pomaliza

Pomaliza, kachidindo P20EE ndi vuto lozindikira matenda lomwe limagwirizana ndi SCR NOx Catalyst Efficiency Under Threshold malfunction. Izi zitha kuchitika chifukwa cha zinthu zingapo, koma zomwe zimachititsa kuti zikhale zovuta kwambiri ndi zinthu zosefera za DPF ndi madzimadzi a DEF. Katswiri akuyenera kuyang'ana zomwe zingayambitse ndikuyang'ana buku la mautumiki kuti adziwe bwino ndikukonza khodiyi.