Error P0420: yuav ua li cas txog nws?

2024 Tus sau: Henry Conors | [email protected]. Kawg hloov kho: 2024-02-12 07:46

Lub tsheb tso pa roj ntxuav yog qhov nyuaj, thiab cov catalyst yog ib qho ntawm nws cov ntsiab lus. Nws tseem hu ua catalytic converter. Nws lub luag haujlwm tseem ceeb yog tig cov khoom tsis zoo uas tso tawm rau hauv qhov chaw mus rau qhov tsis zoo, thiab qhov yuam kev P0420 qhia tias cov pa ntxuav cov pa no ua haujlwm tsis zoo lossis tsis ua haujlwm tag nrho. Hauv qee lub tsheb, ob lub converters siv ib zaug. Hauv qhov no, tus lej yuam kev yuav yog P430. Yog hais tias xws li ib qho yuam kev tshwm sim, ces ua ntej ntawm tag nrho cov nws qhia tau hais tias lub neej ntawm lub catalyst tau mus txog qhov kawg. Tau kawg, muaj lub caij nyoog uas qhov yuam kev tshwm sim vim qhov tsis zoo ntawm cov roj av (thiab qhov no tshwm sim), tab sis feem ntau qhov teeb meem yog qhov tseeb ntawm "kev tuag" ntawm cov catalyst. Zoo, lossis hauv kev ua haujlwm qis.

Vim li cas yuam kev P0420 tsim tawm?

Lub "lub hlwb" ntawm lub tsheb nyob rau hauv cov txheej txheem ntawm kev khiav hauj lwm (tswj) piv cov cim qhia los ntawm ob lub sensors rau ib lub sij hawm ntawm lub sij hawm, xam lub sij hawm ntawm lub voltage signals, thiab yog hais tias nws tsis yog.haum rau hauv qhov chaw pib, lub kaw lus suav tias qhov no yog kev ua txhaum ntawm qhov nruab nrab. Nws ntseeg tau tias qhov sib txawv ntawm qhov amplitudes ntawm cov pa oxygen sensors (pem hauv ntej thiab nram qab) yuav tsum tsis txhob ntau tshaj 0.7 zaug ib feeb. Txawm li cas los xij, Check engine teeb tsis tuaj sai, tab sis nyob rau hauv 100 vib nas this. Nyob rau hauv rooj plaub no, lub load ntawm lub cav yuav tsum yog los ntawm 21 mus rau 63% ntawm lub crankshaft kev sib hloov ceev ntawm 1720-2800 rpm. Tsis tas li ntawd, qhov kub ntawm cov catalyst yuav tsum siab tshaj 500 degrees.

Yog hais tias lub catalytic converter yog hnav tawm, kev nyeem ntawv ntawm lub rear oxygen sensor yuav maj mam mus rau qhov kev nyeem ntawv pem hauv ntej. Lub hom phiaj tseem ceeb ntawm cov catalyst yog oxidize carbon monoxide thiab neutralize CO₂ emissions rau hauv ib puag ncig. Pib los ntawm tus txheej txheem Euro-3, cov txheej txheem no yog saib xyuas los ntawm ob lub sensors, ntawm qhov uas cov teeb liab tau sib piv tas li txhawm rau txhawm rau sau npe sib sau ua ke ntawm kev nyeem ntawv ntawm lawv. Yog li ntawd, sai los yog tom qab, nyob rau hauv txhua rooj plaub, qhov yuam kev P0420 yuav tshwm sim: ntawm Ford Focus 2, Nissan, Chevrolet, Honda, Toyota thiab lwm yam tsheb uas tau tsim tom qab 1996 thiab muaj ob lambda probes (2 sensors).

Yog li, qhov laj thawj tseem ceeb ntawm kev ua yuam kev P0420 yog qhov kuaj pom ntawm cov roj uas tsis tau hlawv thiab cov pa oxygen seem hauv cov pa tawm. Thiab yog, nws tsuas yog ib qho teeb meem ntawm lub sijhawm, vim hais tias cov catalyst muaj lub neej kev pab cuam tsawg. Thiab qhov kev pab cuam lub neej no feem ntau nyob ntawm qhov zoo ntawm cov roj av uas tus tswv ntawm lub tsheb refuels.

Cov cim qhia yuam kev P0420. Lub tsheb coj li cas?

Nyob ntawm seb qhov catalyst "tuag" (clogged los yognws kev puas tsuaj pib), lub tsheb tuaj yeem coj tus cwj pwm txawv. Tab sis thawj lub teeb liab yog Check engine teeb ntawm lub ntsuas vaj huam sib luag. Qee lub tsheb txawm tias muaj qhov tshwj xeeb catalyst overheating lub teeb, yog li koj tsis tas yuav kuaj xyuas qhov yuam kev. Qhov no txhais tau hais tias cov pa hluav taws xob tsis ua raws li Euro 3-5.

Yeej, thaum tus lej yuam kev P0420 tshwm, ua ke nrog nws:

1. Kev siv roj ntau dua. Yog hais tias lub tsheb feem ntau siv 8 litres ib 100 km, ces nrog ib tug idle catalyst, noj yuav nce mus rau 9-10 litres ib 100 km.
2. Tsheb dynamics raug txo.
3. Npua tsw hloov thiab ua kom paub meej.
4. Catalyst sab rattling.
5. Koj tuaj yeem ntsib qhov tsis zoo (rpm dhia).

Yog tias tsawg kawg ob peb ntawm cov cim saum toj no tau pom, qhov no qhia tias muaj teeb meem nrog cov catalyst. Yog li ntawd, yuav tsum tau kuaj xyuas tsheb.

Ua rau lub cav yuam kev P0420

Thaum lub sijhawm ua haujlwm ntawm lub cav, lub catalyst muaj kev pabcuam lub neej ntawm 200-250 txhiab kilometers. Txawm li cas los xij, thaum refueling nrog cov ntsiab lus txhuas siab, lub valve yuav tuag sai dua. Tsis tas li ntawd, vim muaj kev ua haujlwm tsis zoo hauv qhov hluav taws xob thiab kev faib tawm ntawm cov pa roj, compression tuaj yeem raug cuam tshuam. Raws li qhov tshwm sim, yuav muaj qhov tsis zoo, uas tseem ua rau kev puas tsuaj ntawm lub catalytic converter thiab ua rau yuam kev P0420 ntawm Ford Focus 2 thiablwm lub tsheb.

Yog li ntawd, cov roj av uas tsis zoo, uas cov neeg tsav tsheb tau ua tiav lawv lub tsheb nrog, yog thawj qhov ua rau muaj kev puas tsuaj rau catalyst. Nws tuaj yeem tawg tom qab 80 txhiab kilometers, txawm hais tias nws yog thawj zaug suav ntawm 200-250 txhiab, yog tias lub tsheb khiav ntawm cov roj av ib txwm muaj.

Kev ua yuam kev P0420:

1. Siv cov roj av lead.
2. Oxygen sensor tsis ua haujlwm S2.
3. luv luv hauv "qis" oxygen sensor system.
4. Kev puas tsuaj hauv lub cev ntawm lwm lub ntsiab lus: tso pa tawm, yeeb nkab, muffler, thiab lwm yam).
5. Catalyst puas.
6. Kev ua haujlwm tsis tu ncua ntawm cov tshuab hluav taws xob sab hauv nrog cov hluav taws tsis zoo.
7. roj siab.

Los ntawm qhov no nws ua raws li hais tias tej zaum yuav muaj 7 qhov ua yuam kev P0420 ntawm Ford Focus 3 thiab lwm lub tsheb uas lambda sojntsuam siv nyob rau hauv cov pa pa huv si. Txawm li cas los xij, feem ntau txhua yam yog yooj yim dua, thiab cov neeg tsav tsheb tsuas yog xav tau refuel nrog cov roj av zoo lossis muab cov pa oxygen sensor snag. Muaj tsawg zaus, cov neeg lambda tsuas yog tsis zaum zoo, uas yog vim li cas lub kaw lus tsis pom lawv thiab qhia txog qhov yuam kev.

Tab sis txhawm rau kom raug thiab txiav txim siab qhov teeb meem uas ua rau qhov yuam kev no, koj yuav tsum kuaj xyuas lub tsheb. Qee qhov xwm txheej, nws yog ib qho tsim nyog yuav tsum tau kuaj xyuas qhov tso pa tawm, manifold lossis oxygen sensor rau cov xau. Suctions thiab xau tuaj yeem cuam tshuam zoo rau kev ua haujlwm ntawm cov sensors, uas, raws li xav tau, coj mus rauyuam kev P0420. Tab sis feem ntau nws yog cov catalyst uas yuav liam.

Npaj rau kev daws teeb meem

Ua ntej koj khiav mus rau qhov kev pabcuam tsheb, sim nrhiav seb yog vim li cas koj tus kheej. Ua li no, koj yuav tsum tau ua ob peb yam yooj yim checks. ua ntej, sim nco ntsoov ntawm qhov chaw nres tsheb roj koj zaum kawg refueled thiab seb cov roj raug puas lawm. Yog tias ua ntej koj ib txwm sau cov roj av A98, thiab lub sijhawm kawg koj tau txiav txim siab sim A92, ces nws yog qhov laj thawj heev uas lub kaw lus pom qhov yuam kev P0420. Hauv qhov no, tsuas yog dov qhov seem ntawm A92 thiab sau lub sijhawm no nrog A98. Rau ntau tus tswv tsheb, tom qab hloov roj av, qhov yuam kev ploj mus.

Tom ntej no, xyuas lub rear oxygen sensor connector. Yog tias nws txav deb me ntsis, qhov no tuaj yeem ua rau muaj qhov yuam kev. Yog tias txhua yam ua tau zoo nrog qhov no, ces koj yuav tsum txuas lub computer kom tshem tawm qhov yuam kev thiab cov ntaub ntawv los ntawm chav tswj.

Tshuaj xyuas cov haujlwm ntawm cov catalyst

txhawm rau txheeb xyuas qhov raug thiab ua haujlwm ntawm cov catalyst, sib piv cov duab hluav taws xob ntawm ob lub ntsuas pa oxygen. Lub khoos phis tawj yuav ua kom pom tseeb qhov txo qis hauv qhov tso zis hluav taws xob thaum sib tov yog lean thiab nce ntxiv thaum ntxiv. Yog hais tias cov pa sensor voltage nyob rau hauv cheeb tsam ntawm 900 millivolts, qhov no qhia tau hais tias ib tug enrichment ntawm cov sib tov, 100 millivolts qhia ib tug lean sib tov.

Kev daws teeb meem

Ntau tus tswv tsheb, tawm ntawm qhov tsis paub txog qhov ua rau muaj qhov yuam kev, sim tshem tawm nws los ntawm kev hloov cov sensors lossis ntxuav lub damper. Tab sis qhov no tsis pab, vim yog vim li cas nyob rau lwm qhov.

Ua ntej, koj yuav tsum tausim swapping lub lambda sojntsuam. Lawv zoo tib yam hauv lawv hom thiab tuaj yeem hloov tau ib leeg. Yog tias qhov thib ob cov pa oxygen sensor tau ua txhaum, ces peb yuav tau txais lwm qhov yuam kev (raws li kev xaiv, P0134). Xws li kev kuaj mob yog qhov yooj yim thiab siv tau tsuas yog yog tias lub sensor thib ob ua tsis tiav. Yog hais tias qhov teeb meem tsis nyob rau hauv lub sensors kiag li, ces qhov yuam kev yuav tsis ploj.

Thib ob (nws twb tau hais lawm), koj yuav tsum tau sim refuel nrog roj av zoo dua. Yog vim li cas nyob rau hauv cov roj, tom qab 2-3 hnub qhov yuam kev yuav ploj mus.

Kauj Ruam thib peb ntawm kev daws qhov teeb meem (yog tias tsis muaj dab tsi pab tau) yog kuaj xyuas cov catalyst. Peb yuav tsum tau kuaj xyuas nws cov peev txheej. Nws qhov kev puas tsuaj tuaj yeem yog vim qhov ua haujlwm tsis zoo ntawm lwm lub cav tshuab. Thiab yog tias cov khoom no tau kub dhau, ces qhov kev ua yuam kev zoo sib xws tuaj yeem tshwm sim.

daws teeb meem ntawm kev ua haujlwm qis catalyst

Ntau zaus qhov teeb meem ntawm lub catalyst nrog kev ua haujlwm tsis zoo yog daws los ntawm flashing ECM. Tsuas yog lwm qhov software tau teeb tsa, qhov twg cov kab mob toxicity txawv (piv txwv li, EURO2). Lub kaw lus tseem sib piv tus nqi ntawm ob lub sensors, tab sis tam sim no qhov sib txawv ntawm qhov tsis sib xws yuav cuam tshuam rau cov tshuaj lom ntawm EURO2. Dab tsi tuaj yeem ua tiav nrog qhov no? Yam tsawg kawg, qhov yuam kev ntawm lub dashboard yuav ploj mus, tab sis tsis muaj ntxiv.

Catalyst hloov

Qhov kev xaiv kim tshaj plaws yog los hloov cov catalyst qub nrog ib qho tshiab thiab qub. Txawm li cas los xij, qhov no yog tus txheej txheem kim vim tus nqi siab ntawm cov cuab yeej nws tus kheej. Tus nqi tuaj yeem ncav cuag 40 txhiab rubles.

NyobQhov kev xaiv yog siv lub universal catalyst, uas muaj ib tug tsawg efficiency tshaj tus thawj ib (nws yog tag nrho hais txog cov khoom: tus thawj catalyst yog ceramic, thiab universal ib tug yog ua los ntawm hlau). Tsis tas li ntawd, nws cov peev txheej tsuas yog 30-50 txhiab kilometers, thiab tsis yog txhua lub tsheb coj nws zoo. Tab sis nws tsis tas yuav muaj kev hloov pauv software hauv qhov system. Thiab lwm qhov kev xaiv: thaum lub sij hawm disassembly, koj tuaj yeem pom tus thawj catalyst, txawm li cas los xij, nws tau siv. Nws yuav tsis paub tias nws qhov deb npaum li cas thiab sai npaum li cas nws yuav poob.

Kev teeb tsa hluav taws kub

Yog tias koj tsis quav ntsej txog cov qauv tshuaj lom neeg txhua, ces qhov kev xaiv pheej yig thiab yooj yim yog los nruab cov nplaim taws. Ua li no, ib lub txhab nyiaj ntawm catalyst raug txiav tawm thiab ib qho kev sib xyaw ntawm lub lambda thib ob raug teeb tsa. Qhov no hu ua hardware snag, tab sis kuj muaj software. Peb tab tom tham txog flashing lub kaw lus thiab hloov mus rau qhov txo qis toxicity. Nws yog ib qho tsim nyog sau cia tias qhov kev daws teeb meem no, txawm hais tias nws cuam tshuam nrog huab cua ntau dua nyob rau hauv txoj kev, tab sis ua rau lub zog loj ntawm lub cav. Tom qab tag nrho, tag nrho cov qauv tshuaj lom thiab ua raws li cov qauv ib puag ncig txiav lub cav lub peev xwm.

Tshem tawm cov catalyst ntawm qhov system

Hloov pauv, cov catalyst tuaj yeem raug tshem tawm tag nrho ntawm lub tshuab tso pa thiab ob lub channel emulator tuaj yeem ntsia tau, uas koj tuaj yeem kho lub teeb liab ceev, lub sijhawm teb.

Nws kuj yuav yog tias thaum lub sijhawm kuaj mob nws hloov tawm tias qhov kev tawm ntawm cov catalyst yog ib txwm muaj (li 0.21 kg / cm ² ntawm 2000 rpm). Qhov no yog heev tau, vimQhov yuam kev yog tshwm sim txawm tias lub catalyst khiav ntawm 70% ntawm nws lub peev xwm. Nyob rau hauv cov ntaub ntawv no, koj muaj peev xwm muab ib tug tshwj xeeb spacer nyob rau hauv lub lambda sojntsuam. Qhov no yog tshuaj pheej yig heev, tab sis nws tsis yog panacea.

Zoo kawg

Tam sim no koj paub tias P0420 (yuam kev) txhais li cas. Ford, Toyota, Honda, Chevrolet thiab lwm lub npe feem ntau raug kev txom nyem los ntawm nws. Txawm li cas los xij, tsis muaj dab tsi tsis ncaj ncees lawm ntawm no. Lub catalyst tsis yog ib feem ntawm qhov system yuav txhawj txog. Thiab txawm tias tsis muaj nyiaj los hloov nws nrog ib qho khoom qub, nws tuaj yeem hloov nrog ib qho thoob ntiaj teb los yog poob dej tag nrho (software lossis hardware).

Peb cia siab tias tag nrho cov kev daws teeb meem saum toj no tau pab koj. Muaj ntau ntau txoj hauv kev los daws nws, yog li koj yuav tsum tsis txhob ntshai vim qhov tsis zoo li no. Nws yog qhov ua tau heev uas koj tsuas yob rov qab cov roj av tsis zoo thiab tom qab refueling ib qho tshiab, qhov yuam kev yuav ploj mus. Tab sis qhov no tsis tshua muaj tshwm sim. Feem ntau cov catalyst yog jammed, thiab qhov kev pabcuam no ntawm cov chaw pabcuam sib txawv tsis kim, vim tias nws tsis cuam tshuam dab tsi nyuaj. Hmoov zoo hauv kev kho qhov yuam kev.