P0642 Low voltage sensor sensor dera

Khodi Yovuta ya OBD-II - P0642 - Kufotokozera Zaukadaulo

P0642 - Voltage yotsika mumayendedwe amagetsi a sensor "A".

Code P0642 ikuwonetsa kuti "A" sensor reference voltage circuit ndiyotsika kwambiri poyerekeza ndi zomwe wopanga amazizindikira ndi gawo lowongolera kapena PCM.

Kodi vuto la P0642 limatanthauza chiyani?

Izi Diagnostic Trouble Code (DTC) ndi njira yolozera, zomwe zikutanthauza kuti imagwira ntchito pamagalimoto okhala ndi OBD-II. Ngakhale zambiri, njira zina zakukonzanso zimatha kusiyanasiyana kutengera mtundu / mtundu.

Ngati galimoto yanu ya OBD II ili ndi P0642 yosungidwa, zikutanthauza kuti gawo loyendetsa mphamvu ya powertrain (PCM) lapeza chizindikiro chotsika chamagetsi chomwe chimadziwika kuti "A". Chojambulira chomwe chimafunsidwa nthawi zambiri chimagwirizanitsidwa ndi kufalikira kwachangu, vuto lotumizira, kapena chimodzi mwazosiyanazo.

Khodi ya sensa yodziwika bwino nthawi zonse imakhala ndi code iyi. P0642 akuwonjezera kuti sensor reference circuit voltage ndi yotsika. Kuti mudziwe malo (ndi ntchito) ya sensa ya galimoto inayake, funsani gwero lodalirika la chidziwitso cha galimoto (All Data DIY ndi njira yabwino). Ndikukayikira kuti cholakwika cha pulogalamu ya PCM chachitika ngati P0642 yasungidwa padera. Muyenera kudziwa ndi kukonza ma sensa ena aliwonse musanazindikire ndikukonza P0642, koma dziwani kuti mphamvu yamagetsi yotsika.

Chojambulira chomwe chimafunsidwa chimaperekedwa ndi voliyumu yamagetsi (nthawi zambiri ma volts asanu) kudzera pa switchable (yoyendetsa pomwe switch yayamba). Padzakhalanso chizindikiro cha pansi. Chojambuliracho chimakhala chosasintha kapena mtundu wamagetsi ndipo chimamaliza dera. Kukaniza kwa sensa kuyenera kuchepa ndikuchulukirachulukira, kutentha kapena liwiro, komanso mosemphanitsa. Pakukaniza kwa sensa kumasintha (kutengera momwe zinthu zilili), imapatsa PCM chizindikiritso chamagetsi.

Ngati cholowa chamagetsi cholandiridwa ndi PCM chili pansi pamalire, P0642 idzasungidwa. Nyali yowunikira (MIL) itha kuwunikiridwanso. Magalimoto ena amafunikira mayendedwe angapo oyendetsa (ikadzalephera) kuti nyali yochenjeza iwunikire. Lolani PCM kuti ikhale yokonzeka musanaganize kuti kukonza kuli bwino. Ingochotsani code mukakonza ndikuyendetsa mwachizolowezi. Ngati PCM ikafika pokonzekera, kukonzanso kunachita bwino. Khodi ikachotsedwa, PCM siyingayime modikirira ndipo mukudziwa kuti vuto likadalipo.

Kulimba ndi zizindikilo

Kukula kwa P0642 komwe kumasungidwa kumatengera mtundu wa sensa yomwe ili pamagetsi ochepa. Ma code ena osungidwa ayenera kuwunikiridwa asanatsimikize mwamphamvu.

Kuphatikiza pa kukhala ndi nambala ya P0642 mu kukumbukira kwa PCM, galimotoyo singayambe. Kuyamba kungakhale kovuta ndipo injini ikhoza kukhala yovuta. Kutentha kwamafuta kungachepe, injini ikhoza kuwotcha, ndipo dalaivala angazindikire kuchepa kwamphamvu kwa injini. Kuwala kwa Check Engine kudzayatsidwa, koma izi zitha kutenga maulendo angapo oyendetsa.

Zizindikiro za chikhombo cha P0642 zitha kuphatikizira izi:

• Kulephera kusinthitsa kufalikira pakati pa masewera ndi zachuma
• Zovuta zosintha magiya
• Kuchedwa (kapena kusowa) koyambitsa kufalitsa
• Kutumiza kulephera kusinthana pakati pa XNUMXWD ndi XNUMXWD
• Kulephera kwa chindapusa kuti musinthe kuchokera kutsika kupita pama gear apamwamba
• Kupanda kuphatikizidwa kwakutsogolo
• Kuperewera kwachitetezo chakutsogolo
• Ma speedometer / odometer osagwira bwino

Zifukwa za P0642 kodi

Nthawi zambiri, code P0642 imayamba chifukwa chafupikitsa kapena kutseguka mu waya kapena zolumikizira pakati pa ma module othandizira kapena kuchokera kumagawo owongolera kupita ku PCM. Zifukwa zina zingaphatikizepo:

• Gawo lowongolera injini (ECM)
• Tsegulani kapena lalifupi la magawo amagetsi masensa injini
• Lotseguka kapena lalifupi mu harni ya ECM
• Kuzungulira kwakufupi kwa sensa pa dera la 5-volt
• Mawaya apansi omasuka kapena otsekedwa mu gawo lolowera la PCM
• Zolakwika zamkati mu PCM
• Chojambulira choyipa
• Mafyuzi opunduka kapena owombetsedwa ndi / kapena mafyuzi
• Zolakwika dongosolo mphamvu kulandirana
• Tsegulani dera ndi / kapena zolumikizira

Njira zowunikira ndikukonzanso

Kupeza nambala yosungidwa ya P0642 kudzafunika chojambulira cha matenda, digito volt / ohmmeter (DVOM), ndi gwero lodalirika lazidziwitso zamagalimoto (monga All Data DIY). Oscilloscope ya m'manja ingathandizenso kupeza matenda.

Choyamba, funsani gwero lazidziwitso zamagalimoto anu kuti mudziwe komwe kuli sensa yomwe ikufunidwa monga momwe imafotokozera pagalimoto yanu. Yang'anani mozungulira zingwe ndi zolumikizira zogwirizana ndi makina amagetsi. Konzani kapena sinthanitsani zingwe zowonongeka kapena zopsereza, zolumikizira, ndi zida zikufunika. Kachiwiri, polumikiza sikani pa doko lodziwitsa anthu za magalimoto ndikutenga ma DTC onse osungidwa ndikuwunditsa chimango. Lembani ma code pamodzi ndi momwe adasungidwira ndi zina zilizonse zofunika kuzizira, popeza izi zitha kukhala zothandiza ngati manambala atheka kukhala apakatikati. Tsopano mutha kupita patsogolo ndikuyeretsa kachidindo; ndiye yesani kuyendetsa galimoto kuti muwonetsetse kuti yakhazikitsanso nthawi yomweyo.

Ngati nambala yanu ikukhazikitsanso nthawi yomweyo, gwiritsani ntchito DVOM kuyesa mayendedwe amagetsi ndi ma ground anu pa sensa yomwe ikufunsidwayo. Nthawi zambiri mumayembekezera kuti mupeza ma volts asanu ndi nthaka yolumikizira sensa.

Pitirizani kuyesa kukana kwa sensa ndi kupitilirabe ngati ma voliyumu ndi ma ground akupezeka pa cholumikizira cha sensa. Pezani mayeso oyeserera kuchokera pagwero lazidziwitso zamagalimoto anu ndikuyerekeza zotsatira zanu zenizeni kwa iwo. Masensa omwe sagwirizana ndi izi ayenera kusinthidwa.

Chotsani maulamuliro onse okhudzana ndi ma circuits musanayese kukana ndi DVOM. Kulephera kutero kungawononge PCM. Ngati voliyumu yotsika ndiyotsika (pa sensa), gwiritsani ntchito DVOM kuyesa kuyesa kwa dera ndi kupitiriza pakati pa sensa ndi PCM. Sinthanitsani madera otseguka kapena afupikitsidwe ngati kuli kofunikira. Ngati sensa yomwe ikufunsidwayo ndikubwezeretsanso mphamvu yamagetsi yamagetsi, gwiritsani ntchito oscilloscope kutsata zomwezo munthawi yeniyeni. Ganizirani za ngozi ndi madera otseguka kwathunthu.

Zowonjezera zowonjezera:

• Khodi yamtunduwu nthawi zambiri imaperekedwa ngati chithandizo chamakhodi ena.
• Khodi yosungidwa P0642 nthawi zambiri imagwirizanitsidwa ndi kufalitsa.

Zolakwa Zomwe Zimachitika Mukamazindikira Khodi P0642

Nthawi zambiri, vuto likakhala ndi kulumikizana pakati pa ma module owongolera, ma code ena amawonekera mu PCM. Izi nthawi zambiri zimakhala chifukwa cha kulumikizana koyipa komwe kumayambitsa nambala P0642 ndipo sikufuna kukonzedwa. Komabe, mavutowa nthawi zambiri amapezeka ndi kukonzedwa poyamba, zomwe sizithetsa vuto lalikulu.

Kodi P0642 ndi yowopsa bwanji?

Ngati scanner ya OBD-II ipeza code P0642, ndikofunikira kuti galimotoyo iwunikidwe ndikuikonza nthawi yomweyo. Vuto pakati pa ma module owongolera lidzakhudza kayendetsedwe ka galimoto ndikuchepetsa magwiridwe antchito a injini. Kuti muwonetsetse kuti galimotoyo ikugwira ntchito, ndikofunikira kukonza vuto lomwe likuyambitsa nambala ya P0642 nthawi yomweyo.

Ndi kukonza kotani komwe kungakonze P0642?

Nthawi zambiri, chifukwa cha code P0642 chidzakonzedwa panthawi yachidziwitso choyambirira, chifukwa vuto lalikulu la codeyi likusungidwa ndi zigawo zamagetsi. Komabe, pali mitundu ina ya kukonzanso yomwe ingafunike kuthetsa vuto lalikulu. Izi zikuphatikizapo:

• Kusintha gawo lolephera kuwongolera injini (ECM).
• Kusintha kapena kukonza chingwe chotseguka kapena chachifupi cha ECM.
• Kusintha kachipangizo kakang'ono ndi 5-volt circuit.
• Kusintha PCM ndi zizindikiro za mavuto amkati.
• Kusintha ma module owongolera olakwika.

Ngati ma module aliwonse owongolera asinthidwa, ma module atsopanowa ayenera kukonzedwanso. Ngati makaniko adumpha sitepe iyi, ndizotheka kuti ma code ambiri adzasungidwa pakanthawi kochepa kotsatira. PCM yokonzedwa molakwika ingapangitse kuti galimoto isayambe.

Ndikofunikiranso kuti khodi ya P0642 ichotsedwe ndipo makinawo ayesedwenso pambuyo pokonza kulikonse. Njirayi imachepetsa chomwe chimayambitsa vutoli mpaka kukonza koyenera kungapezeke ndikuchitidwa.

P0642 ✅ ZIZINDIKIRO NDI KUTHETSA ZOYENERA ✅ - Khodi yolakwika OBD2

Mukufuna thandizo lina ndi nambala yanu ya p0642?

Ngati mukufunabe thandizo ndi DTC P0642, lembani funso mu ndemanga pansipa pamutuwu.

ZINDIKIRANI. Izi zimaperekedwa kuti zidziwitse zokha. Sikuti tizigwiritsa ntchito ngati malingaliro okonzanso ndipo sitili ndi udindo pazomwe mungachite pagalimoto iliyonse. Zomwe zili patsamba lino ndizotetezedwa ndi zovomerezeka.