Tsheb, Tsheb
Code p0420 Toyota uas tsis, Ford thiab lwm yam tsheb
Peb nyob hauv ib lub ntiaj teb uas yog nyob rau hauv kauj ruam nrog lub sij hawm. Khoos phib tawj technology nyob rau thaum xaus ntawm lub xyoo pua xeem yog tsis tau dhau los ntawm lub tsheb lawm. Tus thawj tsheb nrog ib tug onboard diagnostic system yog tswvcuab los ntawm Volkswagen nyob rau hauv 1968.
On-board diagnostics
Txhua tus neeg tsav tsheb uas muaj ib tug niaj hnub tsheb paub txog qhov system ntawm onboard diagnostics nyob rau hauv lub tshuab, uas yuav siv tau los nrhiav ib lub tsheb malfunction. Nyob rau hauv ib tug literal siab, lub tsheb nws tus kheej txiav txim nyob qhov twg thiab yog dab tsi nws txhaum, thiab muab ib tug tej yam mob code ntawm tus dais los ntawm txoj kev uas tus neeg tsav tsheb los yog tus tswv no ib tug txhaum thiab nrhiav txoj kev los kho.
kev ua yuam kev p0420
Heev diagnostic yuam kev code. Cov ntaub ntawv nyob rau hauv qhib chaw nrug, los yog tsuas yog nyob rau hauv lub neej txhua hnub ntawm cov tswv ntawm lub tsheb yeej yuav hnov ib tug ntau ntawm cov ntaub ntawv, taug xaiv thiab cov tswv yim hais txog qhov no code. Cia saib dab tsi nws txhais tau hais tias, zoo li cas ntawm cov teeb meem yuav hais li cas daws cov teeb meem rau qhov teeb meem no ua ib ke.
Li cas rau cov kev ua yuam kev code p0420
Koj yuav saib tau npaum li cas koj tig rau cov kev tswj rau cov dashboard zaub. Koj mus rau hauv lub tsheb ntxuav, los yog tej zaum luam theej duab lub tsheb rau koj tus kheej thiab paub dab tsi qhov teeb meem yog hais nyob rau hauv daim ntawv ntawm cov kev ua yuam kev p0420. Tom qab displaying tus code, ua ntej kom paub tseeb tias r0420 yog tus tsuas yog qhov chaw. Yog hais tias tsis tau, koj yuav tsum tshawb nrhiav qhov lwm cov lis dej num, raws li lawv tej zaum yuav ua rau r0420 code. Yog vim li cas rau qhov no yog hais tias cov converter yog lub kawg ntawm tus mob. Nyob rau hauv hauv paus ntsiab lus, yog hais tias muaj yog ib qho teeb meem nrog ib tug ntawm cov sensors nyob rau hauv lub cav lossis qhov tso pa, uas tej zaum yuav raug nyob rau hauv ib tug txo los yog nce nyob rau hauv tus nqi ntawm cov roj nkag mus rau lub engine.
Yog li ntawd peb pom cov code, thiab yog hais tias muaj yog tsis muaj lwm yam, tsuas yog P0420, nws feem ntau txhais tau tias qhov kev kawm ntawm koj catalytic system yog qis tshaj yuav tsum tau ntsuas los ntawm koj cov pa sensors. Qhov no txhais tau tias yog ib qho teeb meem los sis nrog ib tug catalytic converter, los yog nrog cov pa sensors, los yog ob qho tib si, nyob rau hauv kev txiav txim thiab nrog rau lwm yam. Lub hom phiaj ntawm lub catalyst yog kev puas tsuaj ntawm cov teeb meem kuab paug ua thaum lub sij hawm lub combustion voj voog. Siv platinum thiab kub zoo mesh lim rau pa hauv paus catalytic converter yog tau txo emissions los ntawm cov tailpipe. Lub catalytic converter muaj ob tug oxygen sensors. Ib cov pa sensor yog pov tseg nyob rau hauv pem hauv ntej (ntws los) catalyst, thiab lwm yam pa sensor yog nyob qab (downstream). Yog hais tias lub hauv pem hauv ntej pa sensor yog ua hauj lwm kom zoo, nws yuav tsum ntsuas wobble thaum lub tsheb yog thaum khiav hauj lwm kub thiab thaum kev khiav hauj lwm nyob rau hauv ib tug kaw Circuit Court. Yog hais tias lub downstream oxygen sensor yog ua hauj lwm kom zoo thiab nyob rau hauv lub catalytic converter, muaj yog tsis muaj teeb meem, nws zaj lus tim khawv yuav tsum nyob ruaj khov. Thaum cov pa sensor readings yog zoo xws li ib lwm, qhov no qhia tau hais tias lub catalytic converter yog tsis ua hauj lwm kom zoo. . Yog hais tias lub voltage txo rear oxygen sensor thiab pib oscillate zoo li rau pem hauv ntej cov pa sensor, qhov no txhais tau tias cov pa ntau ntau dhau heev lawm, thiab lub hwj chim kis tau tus mob tswj module yuav p0420 yuam kev code.
Dab tsi ua rau r0420 code?
Puas los yog to yam khoom uas kom lub tsheb tsis nrov nyob rau ntawd.
Ib tug puas tso manifold los yog txia tuaj nyob rau ntawd.
Puas tso cov kav dej.
Misfire nyob rau hauv lub engine.
roj Kev ua qias tuaj nyob rau hauv lub catalytic converter.
Puas catalyst (feem ntau).
Ib tug faulty sensor engine kub coolant.
Puas pem hauv ntej pa sensor.
Puas rear oxygen sensor.
Puas thaiv cov pa sensor.
Pa sensor incorrectly kev cob cog rua thaiv.
Puas oxygen sensor connectors.
To roj injector.
High roj siab.
Siv cov tsis ncaj ncees lawm hom roj (leaded).
Raws li ib tug kws kho tsheb kuaj lub code p0420?
Pab OBD-II scanner rau extracting txhaum leb muab cia rau hauv lub PCM.
Xav tam sim no cov ntaub ntawv downstream (rear) oxygen sensor. Nws txiav txim seb cov pa sensor yog ua hauj lwm kom raug.
. Kev tshawb nrhiav tag nrho cov lwm yam leb, uas yuav ua rau ib tug txhaum cai p0420.
Yog hais tias tsim nyog, xa misfire, teeb meem nrog ignition thiab roj system muaj teeb meem.
Soj ntsuam ntawm lub rear oxygen sensor rau kev puas tsuaj thiab ntau coj.
PCM tshev tshiab yog hais tias tus catalytic converter yog faulty. Tom qab hloov cov catalytic converter yuav tsum tau PCM tshiab.
Common yuam kev thaum diagnosing code p0420
Cov feem ntau ua yuam kev yog hloov cov pa sensors ua ntej kawm tiav ntawm lub diagnostic txheej txheem. Yog hais tias lwm tivthaiv ua rau ib tug txhaum cai p0420, oxygen sensor hloov yuav tsis tshem tawm cov teeb meem no.
Yuav ua li cas loj yog cov code p0420?
Cov neeg tsav tsheb tsis muaj muaj teeb meem nrog rau cov tuav, yog hais tias muaj yog ib tug txhaum cai p0420. Nyob rau hauv tas li ntawd mus rau lub ua kom cov qhov taw qhia cov tsos mob ntawm no txhaum cai tej zaum yuav tau overlooked. Txawm li cas los, Yog hais tias lub tsheb yog ua nrog ib tug yuam kev thiab qhov teeb meem yog tsis solved, loj puas tsuaj tej zaum yuav tsum tau raug mus rau lwm cov Cheebtsam. Raws li nrog rau p0420 muaj tsis muaj teeb meem nrog rau cov kev tuav, nws tsis yog ib tug loj los yog txaus ntshai rau tus neeg tsav tsheb. Txawm li cas los, yog hais tias tus code yog tsis kho nyob rau hauv ib tug raws sijhawm, lub catalytic converter tej zaum yuav tiag puas. Raws li cov catalyst rau kho ntawm txoj kev, nws yog ib qho uas tus txhaum code p0420 kuaj mob thiab kho sai li sai tau.
Yuav ua li cas kho tau txhim kho cov kev cai p0420?
Hloov yam khoom uas kom lub tsheb tsis nrov thiab tshem tawm to.
Hloov cov tso manifold thiab tshem tawm to.
Hloov cov rav cua tsheb yeeb nkab.
Hloov cov catalytic converter (feem ntau).
Hloov cov cav coolant kub sensor.
Hloov cov pem hauv ntej los yog nram qab lub oxygen sensor.
Kho los yog hloov puas thaiv rau oxygen sensors.
Kho los yog hloov connectors oxygen sensor.
Hloov los yog kho cov roj injectors uas coj qhov chaw.
Kev tshawb nrhiav tej kev kho yog tias muaj teeb meem nrog misfire.
Kev tshawb nrhiav thiab kho tej yam lwm yam txhaum leb uas tau raug khaws cia hwj chim tswj module (PCM).
Coj tsis ncaj p0420 kev ua yuam kev
Heev feem ntau koj yuav nrhiav tau ib tug glowing txhaum taw qhia tom qab sau cov neeg pluag-zoo sam roj rau koj lub tsheb. p0420 kev ua yuam kev rau "Ford kom pom tseeb" - ib tug es mundane tshaj plaws, thiab cov qauv no - ib tug heev qhua rau cov kev pab chaw nres tsheb nrog lub code. Ua kom muaj qhov teeb meem yog piav saum toj no nrog ib lub hauv paus, nws yog txiav txim siab nrhiav ua inefficient lag luam ntawm lub catalytic converter. Muaj kev xaiv rau tus tiav tshem tawm ntawm lub catalyst, vim hais tias ntawm nws cov high nqi tsis laij hloov los ntawm ib tug tshiab. Tab sis qhov kev tshem tawm ntawm p0420 tsis daws tau qhov teeb meem ntawm kev ua yuam kev nyob rau hauv lub "Ford". Hais tias nws tau zoo thiab qhov taw qhia tsis thab koj, koj yuav tsum ua kom yuam kev lub computer los yog sensor (lambda sojntsuam 2). Muaj cov neeg kho tshuab, hluav taws xob thiab software txoj kev faiv fab down. Neeg kho tshuab sojntsuam tso rau hauv lub manifold nrog lub tog raj thiab lub aperture therein. Hauv txoj kev yuav teem resistor nyob rau hauv lub teeb liab thaiv, uas tshem tawm koj Ford yuam kev p0420. Lwm txoj kev - nws yog firmware on-board computer system yog lub feem ntau sophisticated txoj kev, raws li xav tau uas tsim nyog tus kws xws ua si. Cov kev muaj nyob rau hauv feem ntau tus neeg mob pab mus rau bypass qhov yuam kev p0420 rau "Ford kom pom tseeb 2" thiab "Ford kom pom tseeb 3".
Tsis tas li ntawd, muaj cov kev pab uas yog ua thiab mounted tua hluav taws tsis txhob siv lub catalyst. Piv txwv li, thaum nws los txog rau "Mazda 3" (p0420 kev ua yuam kev no tshwm sim rau nws ntau heev), rau nws ib tug txoj kev uas yuav daws tau qhov teeb meem no - nws yog cov kev hloov ntawm lub catalytic converter rau cov nplaim taws arrestor. Lwm txoj kev - mus teem lub catalyst emulator. Ib qho ntawm feem nrov - Kab laug sab CE2, nws yuav muab tau yooj yim kev cob cog rua rau lub cable rau poslekatalizatorny sensor, thiab qhov teeb meem yog solved. Qhov no yog feem ntau siv nyob rau hauv kev ua yuam kev p0420 rau lub Toyota Corolla, vim hais tias nws yog heev yooj yim mus tau rau hauv lub hlau lambda sojntsuam. Siv cov emulator tsis ua hauj lwm nyob rau hauv tag nrho cov mob.
Thaum qhov yuam kev p0420 rau "Suzuki" tsav tsheb xav mus khob lub catalytic converter thiab cov qauv ntawm cov nti-tuning tsheb flash hlwb nyob rau hauv tus txheej txheem "Euro-2". Nyob rau ib txhia ua qauv, "Suzuki" siv ib emulator puas yuam kev tseem zoo nkaus li thiab ua rau yus tag nrho rau hauv lub ensuing txim. Txoj kev firmware software kuj yog siv, txawm hais tias nws yog, raws li hais saum toj no, nws yog heev.
Ib tug nrov txoj kev los piav qhia txog cov kev ua yuam kev p0420 piv txwv nyob rau hauv "Subaru". Rau cov tsheb ntawm cov hom no muaj ib tug tshwj xeeb firmware rau tus tswj tsev, nyob qhov twg cov uas tsis yog neeg xiam oob khab thiab yuav tsis tawm. Qhov no daws qhov teeb meem nrog rau cov qhov taw qhia thiab on-board system, tab sis tsuas yog hais tias nws yog txuam nrog kev puas tsuaj los yog deterioration ntawm lub catalyst thiab cov pa sensors.
Ntxiv cov lus rau cov saib xyuas los ntawm cov code p0420
Teeb meem nrog tus tiv cav tseb system, roj system, cua kom tsawg thiab misfire tej zaum yuav raug nyob rau hauv kev puas tsuaj rau lub catalytic converter, yog hais tias lawv yuav tsis tshem tawm sai sai. Cov Cheebtsam yog cov feem ntau ua los ntawm ib tug txhaum cai p0420. Nyob rau hauv ib co tsheb, vim hais tias ntawm qhov yuam kev tsis tu tsis tseg khiav lag luam cov nkoj tswj thiab stability tswj. Nyob rau hauv lub CIS lub teb chaws nrog lub catalyst teeb meem tshwm sim vim cov neeg pluag zoo ntawm peb cov roj, uas yog tsis npaj rau tej kev cai "Euro-3" los siab dua. Yog li ntawd, txawv teb chaws tsheb, uas yog ua los ntawm kev siv cov catalyst systems uas zoo fuels tsis. Muaj tag nrho cov yav tas los piav muaj teeb meem nrog lub catalyst, thiab nws sai sai ris tawm, ntsig txog, uas qhia peb mus rau lub mob ntawm ib tug paub kab laum.
tshawb pom
Yog hais tias koj tsis txhob yuam kev, tsis xav kom tshem tawm cov catalytic converter, aiming lub tshuab ua raws li tej kev cai, ces nws yog tsim nyog los ua nws txoj kev kho thiab txij nkawm. Ntawm no yog ib co tswv yim:
- Tshwj xeeb txhais tau tias, piv txwv li catalytic Converter ntxhua khaub ncaws, ntxuav lub catalyst, tom no lub sij hawm ntawm nws lub neej.
- Chaw sam roj gas noj tsuas yog nyob rau XYUAS TIAS MUAJ TSEEB thiab zoo roj. Txwv tsis pub nws yog tsim nyog los hloov lub catalytic converter, thiab tus nqi yog heev siab heev.
Pheej yig dua lwm tiv thaiv qhov chaw uas tsis yog piav emulators thiab reprogramming ntawm lub system. Cov kev xaiv tsis thuam qhov kev kawm ntawm cov tsheb, thiab nyob rau hauv tej rooj plaub txawm txhim kho nws.
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