P0490 Exhaust Gas Recirculation (EGR) Sarrafa "A" High Circuit High

OBD-II Lambar Matsala - P0490 - Takardar Bayanai

Circuit Control Recirculation Control Circuit "A" Mai Girma

Menene ma'anar lambar matsala P0490?

Wannan sigar lambar watsawa ce gabaɗaya wacce ke nufin ta rufe duk samfura / samfura daga 1996 zuwa gaba. Koyaya, takamaiman matakan warware matsala na iya bambanta daga abin hawa zuwa abin hawa.

Waɗannan lambobin matsala na injin suna nuni ne ga rashin aiki a tsarin sake zagayawa da iskar gas. More musamman, bangaren lantarki. Tsarin sake zagayowar iskar iskar gas wani sashi ne mai mahimmanci na tsarin shaye-shayen abin hawa, wanda aikinsa shine hana samuwar NOx mai cutarwa (nitrogen oxides) a cikin silinda.

EGR yana sarrafawa ta kwamfutar sarrafa injin. Kwamfuta tana buɗewa ko rufe sake buɗe gas ɗin da ke shafar iskar gas dangane da nauyi, gudu da zafin jiki don kiyaye madaidaicin zafin silinda. Akwai wayoyi guda biyu zuwa solenoid na lantarki akan EGR wanda kwamfutar ke amfani da ita don kunna ta. Hakanan potentiometer yana cikin iskar gas mai ƙona gas, wanda ke nuna matsayin sandar EGR (tsarin aikin da ke buɗewa da rufe bututun).

Wannan yana kama da rage hasken fitilu a cikin gidan ku. Lokacin da ka kunna juyawa, hasken yana ƙara haske yayin da ƙarfin ƙaruwa yake ƙaruwa. Kwamfutar injinku ba ta ganin wani canji na wutar lantarki lokacin da yake ƙoƙarin buɗe ko rufe EGR, yana nuna cewa yana makale a wuri guda. P0490 Exhaust Gas Recirculation Control Circuit A yana nufin babu wani babban canji na lantarki, yana nuna cewa EGR tana buɗewa ko rufewa. P0489 daidai yake, amma yana nufin ƙarancin kewaye, ba babba ba.

Man da ba a sarrafa shi yana haifar da NOx a matsanancin yanayin zafi na injin silinda. Tsarin EGR yana jagorantar adadin sarrafa gas ɗin da aka sarrafa zuwa yawan amfani. Manufar ita ce a cakuda cakuda mai shigowa da isasshen don kawo zafin zafin silinda a ƙasa da wanda aka kafa NOx.

Aiki na tsarin EGR yana da mahimmanci don dalilai fiye da rigakafin NOx - yana ba da mafi kyawun lokaci don ƙarin iko ba tare da ƙwanƙwasa ba, da kuma cakuda mai mai laushi don ingantaccen tattalin arzikin mai.

Cutar cututtuka

Alamomin cutar za su bambanta dangane da matsayin allurar EGR a lokacin gazawa. A mafi yawan lokuta, lambar P0490 ba ta riga ta kowace alama. Mai abin hawa za a faɗakar da matsalar ta hanyar duba Injin da ke fitowa. Duk da haka, wasu motocin na iya yin gudu ba bisa ƙa'ida ba ko kuma da wahalar farawa. Masu abin hawa zasu iya ana samun raguwar wuta ko raguwar amfani da mai.

• Matsanancin injin gudu mai tsananin ƙarfi
• Duba hasken injin yana kunne
• Faduwar tattalin arzikin mai
• Rage iko
• Babu farawa ko mawuyacin farawa, biye da rago mai kaifi

Matsalolin Dalilai na Code P0490

Mafi yawan lokuta, tashar EGR ko DPFE da aka toshe ita ce ke da alhakin lambar P0490.

Hakanan ana iya samun gajeriyar wutar lantarki zuwa baturi ko rashin aikin ECU wanda ke haifar da wannan lambar.

Dalilan wannan DTC na iya haɗawa da:

• Short circuit zuwa ƙasa
• Short circuit zuwa baturi baturi
• Bad connector tare da tura fitar fil
• Lalata a cikin mai haɗawa
• Dirty EGR allura
• Kuskuren fitar da iskar gas din solenoid
• Bad EGR
• ECU mara kyau ko kwamfuta

Hanyoyin gyara

Idan abin hawan ku ya yi tafiya ƙasa da mil 100,000 da mil 80, ana ba da shawarar ku sake duba garantin ku. Yawancin motocin suna ɗaukar garanti na sarrafa iska mai nisan mil 100,000 ko XNUMX. Na biyu, shiga yanar gizo kuma duba duk TSBs masu dacewa (Sabis na Fasaha) masu alaƙa da waɗannan lambobin da yadda ake gyara su.

Don aiwatar da waɗannan hanyoyin bincike, kuna buƙatar kayan aikin masu zuwa:

• Volt / Ohmmeter
• Siffar haɓakar iskar gas mai ƙarewa
• Jumper
• Takardun takarda biyu ko allurar dinki

Bude murfin kuma fara injin. Idan injin ba ya aiki da kyau, cire toshe daga tsarin EGR. Idan injin ya yi laushi, fil ɗin ya makale a cikin EGR. Dakatar da injin kuma maye gurbin EGR.

Dubi mai haɗin waya akan EGR. Akwai wayoyi 5, wayoyi biyu na waje suna ciyar da ƙarfin baturi da ƙasa. Wayoyin tsakiya guda uku na'ura ce mai ƙarfi wanda ke nuna alamar adadin EGR zuwa kwamfutar. Tashar ta tsakiya ita ce tashar magana ta 5V.

Yi nazarin mai haɗawa sosai don fil ɗin da aka fitar, lalata, ko lanƙwasa. Duba kayan aikin wayoyin a hankali don kowane rufi ko yuwuwar gajerun da'ira. Nemo wayoyi masu buɗewa waɗanda zasu iya buɗe da'ira.

• Yi amfani da ma'aunin voltmeter don gwada kowane gubar tashar tare da jan waya kuma a ƙasa baƙar fata. Kunna maɓallin kuma nemo 12 volts da duka tashoshin ƙarshe.
• Idan ba a nuna ƙarfin lantarki ba, to akwai buɗe waya tsakanin tsarin EGR da motar ƙonewa. Idan an nuna volts 12 a gefe ɗaya kawai, tsarin EGR yana da kewaye mai buɗewa ta ciki. Sauya EGR.
• Cire haɗin mai haɗawa daga tsarin sake dawo da iskar gas kuma tare da maɓallin kunnawa da kashe injin, duba lambobi biyu na waje don iko. Rubuta wanda ke da 12 volts kuma maye gurbin mai haɗawa.
• Sanya faifan takarda a kan madaidaicin tashar da ba ta da ƙarfi, wannan ita ce ƙasan ƙasa. Haɗa tsalle -tsalle zuwa faifan takarda. Ƙasa mai tsalle. Za a ji “danna” lokacin da aka kunna EGR. Cire waya ta ƙasa kuma fara injin. Sake kunna waya kuma a wannan karon injin zai yi rauni yayin da EGR ke samun kuzari da daidaita yayin da aka cire ƙasa.
• Idan an kunna tsarin EGR kuma injin ya fara aiki ba tare da ɓata lokaci ba, to tsarin EGR yana cikin tsari, matsalar lantarki ce. Idan ba haka ba, dakatar da injin kuma maye gurbin EGR.
• Bincika tashar madogara na mai haɗa iskar gas mai ƙarewa. Kunna maɓallin. Idan kwamfutar tana aiki yadda yakamata, ana nuna 5.0 volts. Kashe mabuɗin.
• Koma zuwa zane -zanen waya na EGR kuma nemo tashar tashar wutar lantarki ta EGR akan kwamfutar. Saka fil ko faifan takarda a cikin mai haɗawa akan kwamfutar a wannan lokacin don duba lambar sadarwar.
• Kunna maɓallin. Idan 5 volts yana nan, kwamfutar tana da kyau kuma matsalar tana cikin kayan haɗin wayoyi zuwa tsarin EGR. Idan babu ƙarfin lantarki, to kwamfutar tana da lahani.

Shawara don gyara da'irar sake maimaita iskar gas ba tare da maye gurbin komputa ba: Kalli zane -zanen wayoyi da nemo tashar wutar lantarki mai nuna zafin jiki. Duba wannan tashar tare da maɓallin da aka haɗa. Idan 5 volt ref. Voltage yana nan, kashe maɓallin kuma yi alama tashoshin tallafi guda biyu da aka yi amfani da su cikin waɗannan gwaje -gwajen. Cire haɗin komputa, sayar da waya mai tsalle tsakanin waɗannan fil biyu. Sanya mai haɗawa kuma tsarin EGR zai yi aiki ba tare da maye gurbin kwamfutar ba.

Kurakurai na yau da kullun Lokacin gano lambar P0490

Kuskuren gama gari lokacin gano dalilin lambar P0490 shine ta atomatik maye gurbin EGR bawul. Wannan bangare baya rushewa sau da yawa kamar sauran masu yawa. sassan tsarin EGR.

Yaya muhimmancin lambar P0490?

Saboda tarin NOx a cikin silinda na mota na iya zama mai cutarwa sosai, kasancewar Lambar P0490 tana da matukar tsanani. EGR mai aiki da kyau shima muhimmin sashi ne domin mai kyau tattalin arzikin man fetur. Wannan gyara ya kamata a magance nan take.

Menene gyara zai iya gyara lambar P0490?

Tabbatar cewa kayan aikin lantarki basu da alhakin ajiya

Lambar P0490, makanikin yana da zaɓuɓɓukan gyara da yawa:

• Yi amfani da na'urar daukar hoto don saka idanu akan aikin EGR kuma da hannu kwatanta bayanin tare da manufacturer ta bayani dalla-dalla.

• Duba kuma gyara bawul ɗin EGR , Sarrafa solenoid, firikwensin ko firikwensin DPFE. dole.

• Cire haɗin layin mara amfani kuma yi amfani da injin motsa jiki da hannu zuwa bawul ɗin EGR don kiyayewa aiki.

• Cire bawul ɗin EGR kuma tsaftace shi daga toshewa.
• Tabbatar cewa kwamfutar tana aiki da kyau kuma maye gurbin ta idan ya cancanta.
• Bincika duk masu haɗawa da wayoyi don PCM kuma gyara ko musanya kamar yadda ake buƙata.

Bayan kowane irin wannan gyara, dole ne a share lambar kuma dole ne tsarin ya kasance sake dubawa. Yawancin gyare-gyare za a yi alama a cikin jerin, mafi sauƙi zai kasance ƙwararre don taƙaita ainihin dalilin lambar P0490.

Ƙarin sharhi don la'akari game da lambar P0490

Idan an sami lambar P0490 akan abin hawa mai ƙasa da mil 100, duba Garanti na masana'anta ko Garanti na Dila. Ana rufe tsarin EGR kullum ƙarƙashin garanti na yau da kullun, kuma ana iya rufe farashin canji ko gyara garanti.

P0490 ✅ ALAMOMIN DA GYARAN MAGANI ✅ - OBD2 Laifin Laifin

Kuna buƙatar ƙarin taimako tare da lambar ku ta p0490?

Idan har yanzu kuna buƙatar taimako tare da DTC P0490, 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.