P1400 (Volkswagen, Audi, Skoda, Rooj) EGR valve - Circuit Court malfunction
Txheem
P1400 – OBD-II Teeb meem Code Technical Description
Teeb meem code P1400 qhia txog kev ua haujlwm tsis zoo hauv cov hluav taws xob hluav taws xob ntawm cov pa roj recirculation valve hauv Volkswagen, Audi, Skoda, Lub Rooj Tsav Tsheb.
Qhov txhaum cai txhais li cas P1400?
Teeb meem code P1400 qhia tias muaj teeb meem nrog EGR valve hluav taws xob Circuit Court. Lub valve no yog lub luag haujlwm rau kev faib ib feem ntawm cov pa roj rov qab mus rau hauv cov khoom noj khoom haus kom rov ua kom rov qab los kom txo tau cov nitrogen oxide (NOx) emissions thiab txo qhov kub thiab txias hauv lub tog raj kheej. Thaum lub kaw lus pom tias muaj kev ua haujlwm tsis zoo hauv cov pa hluav taws xob hluav taws xob hluav taws xob hluav taws xob (P1400), nws txhais tau hais tias muaj teeb meem hauv cov teeb liab hluav taws xob rau cov pa roj valve.
Tej zaum ua rau
Teeb meem code P1400 tuaj yeem tshwm sim los ntawm ntau yam laj thawj:
- Qhib lossis luv Circuit Court hauv hluav taws xob: Ib qho qhib lossis luv luv hauv cov xov hlau lossis kev sib txuas nrog EGR valve tuaj yeem ua rau lub teeb liab hluav taws xob cuam tshuam thiab ua rau muaj teeb meem code P1400.
- Kev puas tsuaj rau cov xaim lossis cov khoom sib txuas: Kev puas tsuaj rau lub cev, xws li tawg, kinks lossis corrosion, nrog rau cov khoom sib txuas tsis zoo, tuaj yeem tiv thaiv kev xa hluav taws xob teeb liab mus rau EGR valve.
- Cov pa roj recirculation valve malfunction: Lub EGR valve nws tus kheej tuaj yeem ua yuam kev, xws li lub tshuab daig lossis cov ntsaws ruaj ruaj, ua rau nws ua haujlwm tsis zoo thiab ua rau tus lej P1400 tshwm.
- Teeb meem nrog lub chaw tswj hluav taws xob (ECU): Kev ua haujlwm tsis zoo hauv chav tswj hluav taws xob tuaj yeem ua rau muaj teeb meem hauv kev ua haujlwm ntawm kev tswj hwm, nrog rau cov teeb meem ntawm kev tswj cov pa roj recirculation valve.
- Teeb meem nrog sensors: Kev ua haujlwm tsis zoo xws li lub ntsuas qhov ntsuas qhov ntsuas (TPS) lossis manifold siab sensor (MAP) tuaj yeem ua rau P1400 code tshwm.
Cov no tsuas yog qee qhov ua rau ntawm P1400 teeb meem code, thiab kev kuaj mob ntxaws ntxaws ntawm EGR system yog qhov tsim nyog los txiav txim qhov tseeb.
Cov tsos mob ntawm tus lej yuam kev yog dab tsi? P1400?
Cov tsos mob rau P1400 teeb meem code tuaj yeem sib txawv thiab tuaj yeem sib txawv nyob ntawm qhov teeb meem tshwj xeeb thiab hom tsheb, qee cov tsos mob tshwm sim yog:
- Nce emissions ntawm nitrogen oxides (NOx): Yog tias cov pa hluav taws xob rov ua haujlwm (EGR) valve tsis ua haujlwm zoo vim muaj teeb meem qhia los ntawm P1400 code, nws yuav ua rau muaj nitrogen oxide (NOx) emissions ntau ntxiv, uas tuaj yeem pom nyob rau hauv kev tshuaj xyuas tsheb emissions.
- Kev siv roj ntau ntxiv: EGR valve ua haujlwm tsis zoo tuaj yeem ua rau kev siv roj tsis zoo, uas tuaj yeem ua rau muaj roj ntau ntxiv.
- Nce lub cav kub: Kev ua haujlwm tsis raug ntawm EGR valve tuaj yeem ua rau muaj qhov kub thiab txias ntawm lub cav vim qhov tsis zoo ntawm cov pa tso pa tawm, uas tuaj yeem qhia tau los ntawm kev nyeem ntawv ntsuas kub ntawm lub ntsuas vaj huam sib luag lossis los ntawm kev siv cov cuab yeej kuaj xyuas.
- Kev ua haujlwm tsis sib xws ntawm lub cav: Yog tias EGR valve ua haujlwm tsis raug, lub tsheb yuav muaj lub cav khiav tsis zoo, tsis xwm yeem lossis tsis ua haujlwm, uas yuav pom tau los ntawm lub tsheb co lossis vibrating thaum nres lossis idling.
- Cov teeb meem tshwm sim ntawm lub dashboard zaub: Yog tias tus lej P1400 tshwm sim hauv lub tshuab hluav taws xob tswj hluav taws xob, qhov qhia yuam kev tuaj yeem tshwm sim ntawm lub ntsuas ntsuas vaj huam sib luag, xws li "Check Engine" icon lossis lwm cov lus ceeb toom.
Cov tsos mob no yuav tshwm sim txawv nyob ntawm qhov teeb meem tshwj xeeb.
Yuav ua li cas kuaj tau tus lej txhaum P1400?
Cov kauj ruam hauv qab no raug pom zoo los kuaj xyuas DTC P1400:
- Scanning yuam kev codes: Siv lub tshuab kuaj kab mob txhawm rau nyeem cov lej yuam kev los ntawm kev tswj hwm lub tshuab hluav taws xob. Ntxiv nrog rau P1400 code, kuj saib rau lwm cov lej yuam kev uas yuav qhia txog teeb meem cuam tshuam.
- Txheeb xyuas cov kab hluav taws xob thiab cov khoom sib txuas: Tshawb xyuas cov xaim thiab cov txuas txuas nrog EGR valve. Txheeb xyuas qhov tawg, luv Circuit Court, puas lossis oxidation ntawm kev sib cuag.
- Kev ntsuas hluav taws xob Circuit Court: Siv lub multimeter los xyuas cov hluav taws xob hluav taws xob mus rau EGR valve. Nco ntsoov tias lub teeb liab raug xa mus rau lub valve raws li qhov tsim nyog lub cav ua haujlwm.
- Txheeb xyuas cov pa roj recirculation valve: Tshawb xyuas EGR valve nws tus kheej rau kev nplaum, kev puas tsuaj, lossis xau. Nco ntsoov tias lub valve qhib thiab kaw dawb thaum siv hluav taws xob teeb liab.
- Diagnostics ntawm lub electronic control unit (ECU): Yog tias tsim nyog, ua qhov kev ntsuam xyuas ntxiv los xyuas qhov kev ua haujlwm ntawm lub tshuab hluav taws xob tswj hluav taws xob uas tswj cov pa roj recirculation valve. Qhov no yuav suav nrog kev tshuaj xyuas cov teeb liab ntawm cov tswv yim thiab cov zis ntawm ECU, nrog rau kev sim nws txoj haujlwm siv cov cuab yeej tshwj xeeb.
- Xyuas cov sensors: Tshawb xyuas kev ua haujlwm ntawm lwm yam EGR ntsig txog sensors, xws li manifold pressure (MAP) sensor lossis throttle position sensor (TPS), kom ntseeg tau tias lawv ua haujlwm raug.
Tom qab kuaj xyuas thiab txheeb xyuas qhov ua rau ntawm qhov tsis ua haujlwm, qhov tsim nyog kho lossis hloov cov khoom yuav tsum tau ua raws li cov teeb meem pom. Yog tias koj tsis tuaj yeem kuaj xyuas koj tus kheej, nws yog qhov zoo dua los hu rau lub chaw pabcuam tsheb.
Kev kuaj mob yuam kev
Thaum kuaj pom DTC P1400, cov teeb meem hauv qab no yuav tshwm sim:
- Hla lwm yam laj thawj: Thaum kuaj pom tus lej P1400, tus kws kho tsheb yuav tsom rau ntawm EGR valve nkaus xwb, tsis quav ntsej txog lwm yam ua rau xws li kev tawg, hluav taws xob luv luv, lossis teeb meem ntawm chav tswj hluav taws xob (ECU).
- Kev kuaj mob tsis txaus: Tus kws kho tsheb yuav yog cov ntsiab lus los nyeem cov lej yuam kev thiab hloov EGR valve yam tsis tau kuaj xyuas qhov seem ntawm qhov system. Qhov no tuaj yeem ua rau kev kho tsis raug thiab cov teeb meem tseem tsis tau tshawb pom.
- Kev txhais tsis raug ntawm qhov yuam kev code: Qee lub sij hawm tus kws kho tsheb tuaj yeem txhais lus P1400 yuam kev raws li qhov teeb meem nrog EGR valve nws tus kheej, thaum qhov teeb meem tuaj yeem yog nrog Circuit Court, sensors, lossis lwm yam kev tswj hwm lub cav.
- Tsis txaus EGR valve check: Tus kws kho tsheb yuav tsis tuaj yeem kuaj xyuas EGR valve nws tus kheej rau kev nplaum, xau, lossis lwm yam teeb meem kho tshuab, uas tuaj yeem ua rau P1400 code rov tshwm sim tom qab hloov lub valve.
- Tsis quav ntsej cov teeb meem cuam tshuam: Qee tus kws kho tsheb yuav tsom mus rau kev kho P1400 code nkaus xwb thaum tsis quav ntsej txog lwm yam teeb meem uas tseem yuav xav tau kev saib xyuas, xws li cov hlua tawg, cov khoom sib txuas, thiab lwm yam.
Txhawm rau zam qhov tsis raug no, nws yog ib qho tseem ceeb uas yuav tsum ua kom tiav thiab ua tiav kev kuaj mob ntawm EGR system, suav nrog kev sim tag nrho cov khoom sib txuas thiab cov hluav taws xob hluav taws xob.
Txoj cai txhaum loj npaum li cas? P1400?
Qhov hnyav ntawm P1400 teeb meem code tuaj yeem sib txawv nyob ntawm qhov teeb meem tshwj xeeb uas ua rau nws tshwm sim thiab hom thiab qauv ntawm lub tsheb. Nov yog ob peb yam uas yuav tsum xav txog:
- Environmental txim: Kev ua haujlwm tsis zoo hauv cov pa hluav taws xob rov ua haujlwm tuaj yeem ua rau muaj kev tso tawm ntau ntxiv ntawm nitrogen oxides (NOx) thiab lwm yam teeb meem, uas muaj kev cuam tshuam tsis zoo rau ib puag ncig thiab tuaj yeem ua rau ua txhaum cai ntawm ib puag ncig.
- Cov txiaj ntsig nyiaj txiag: Kev ua haujlwm tsis zoo nyob rau hauv cov pa roj recirculation system tuaj yeem ua rau muaj roj ntau ntxiv vim kev siv tsis zoo ntawm cov peev txheej, ua rau cov nqi refueling ntxiv.
- Kev cuam tshuam kev ua haujlwm: Kev ua haujlwm tsis raug ntawm EGR system tuaj yeem ua rau lub cav tsis zoo, tsis muaj zog, lossis lwm yam teeb meem kev ua haujlwm, uas tuaj yeem cuam tshuam kev tuav thiab caij tsheb.
- Tej zaum yuav tshwm sim rau lwm qhov system: Qhov teeb meem uas ua rau P1400 code kuj tuaj yeem cuam tshuam rau kev ua haujlwm ntawm lwm lub tsheb, xws li kev tswj hwm lub cav lossis lub tshuab tso pa, uas tuaj yeem ua rau muaj kev pheej hmoo ntawm kev puas tsuaj ntxiv thiab txo qhov kev cia siab tag nrho ntawm lub tsheb.
Zuag qhia tag nrho, txawm hais tias tus lej P1400 tsis yog qhov tseem ceeb txaus kom nres kev siv lub tsheb tam sim ntawd, nws qhov tshwm sim qhia tias muaj teeb meem uas yuav tsum tau saib xyuas thiab kho raws sijhawm kom tsis txhob muaj qhov tshwm sim tsis zoo ntxiv. Yog li, nws raug nquahu kom koj hu rau tus kws kho tsheb tsim nyog rau kev kuaj mob thiab kho sai li sai tau.
Kev kho dab tsi yuav pab tshem tawm cov cai? P1400?
Kev daws tus lej P1400 yuav xav tau ob peb kauj ruam ua tau, nyob ntawm qhov ua rau qhov teeb meem tshwj xeeb. Ob peb kauj ruam uas yuav pab daws tau qhov chaws no:
- Tshawb xyuas thiab hloov cov pa roj recirculation valve: Yog tias qhov teeb meem yog nrog EGR valve nws tus kheej, nws yuav tsum tau kuaj xyuas kom tsis txhob lo, xau, lossis lwm yam kev puas tsuaj. Yog tias tsim nyog, hloov lub valve nrog ib qho tshiab lossis kho qhov tam sim no.
- Tshawb xyuas thiab hloov cov pa roj recirculation valve txoj hauj lwm sensor: EGR valve txoj hauj lwm sensor kuj tseem yog qhov ua rau ntawm P1400 code. Tshawb xyuas nws rau kev ua haujlwm thiab, yog tias tsim nyog, hloov nws.
- Xyuas cov hluav taws xob circuits thiab connectors: Tshawb xyuas cov xaim thiab cov khoom sib txuas uas txuas EGR valve mus rau chav tswj hluav taws xob (ECU). Xyuas kom tsis txhob muaj kev tawg, luv luv lossis lwm yam teeb meem hluav taws xob.
- Kev kuaj mob thiab kho lwm yam muaj feem xyuam nrog: Ua kev kuaj mob ntxiv txhawm rau txheeb xyuas lwm yam teeb meem uas yuav cuam tshuam nrog EGR system, xws li lub ntsuas ntsuas siab, ECU, thiab lwm yam. Ua kom tsim nyog kho lossis hloov cov khoom raws li qhov tsim nyog.
- Reprogramming lossis hloov kho ECU software: Qee lub sij hawm hloov kho lub tshuab hluav taws xob tswj hluav taws xob (ECU) software tuaj yeem pab daws teeb meem P1400 code, tshwj xeeb tshaj yog tias nws cuam tshuam nrog software lossis teeb tsa.
Txawm li cas los xij, nws raug nquahu kom koj hu rau tus kws kho tsheb tsim nyog lossis lub khw kho tsheb kom kuaj xyuas thiab kho. Lawv yuav tuaj yeem ua qhov kev kuaj mob kom raug ntau dua thiab ua tiav cov haujlwm kho tsim nyog raws li cov neeg tsim khoom pom zoo.
