P0477 Cov pa roj siab tswj valve "A" teeb liab qis
OBD2 yuam kev Codes

P0477 Cov pa roj siab tswj valve "A" teeb liab qis

27.09.2023 /

P0477 – OBD-II Teeb meem Code Technical Description

Cov pa roj siab tswj valve "A" qis

Qhov txhaum cai txhais li cas P0477?

Teeb meem P0477 muaj feem xyuam rau cov kev cai qis qis qis thiab tuaj yeem tshwm sim ntawm ntau lub tsheb, suav nrog Ford, Dodge, Mercedes, Nissan thiab VW. Cov cai no qhia tau hais tias qhov tsis raug hluav taws xob tau nyeem los ntawm cov pa roj cua siab sensor thiab xa mus rau lub cav tswj module (PCM). Yog tias qhov hluav taws xob no qis dua li qub, PCM khw muag khoom code P0477.

Lub tso pa tawm backpressure valve tswj cov pa tawm rov qab, uas pab ua kom cua sov sab hauv thiab txo cov cua sov lub sij hawm defrost nyob rau hauv qis ambient kub. Lub Cav Tswj Module (ECM) siv cov ntaub ntawv hais txog cov pa tawm rov qab, kom tau txais huab cua kub, lub cav roj kub, thiab lub cav thauj khoom los tswj lub valve. Lub valve yog tswj los ntawm 12V tso zis hluav taws xob hauv ECM.

Hauv qhov ntsuas kub qis thiab qee qhov xwm txheej, lub valve yuav raug kaw ib nrab, ua rau sab hauv kom sov. Raws li lub cav thiab roj kub, lub valve tswj cov pa rov qab siab. Kev daws teeb meem P0477 yuav tsum tau kuaj xyuas cov xaim, lub valve, thiab lwm yam khoom ntawm cov pa hluav taws xob tswj qhov system.

Tej zaum ua rau

Qhov teeb meem code (P0477) tuaj yeem tshwm sim vim muaj ntau yam teeb meem:

  1. Lub qhov hluav taws xob manifold check valve yog faulty.
  2. Cov xaim txuas ntawm qhov tso pa tawm manifold kos valve tuaj yeem qhib lossis luv.
  3. Teeb meem nyob rau hauv lub pa manifold check valve Circuit Court, xws li ib tug tsis zoo hluav taws xob kev twb kev txuas.
  4. Lub zog tsis txaus nyob rau hauv lub zog hluav taws xob nruab nrab ntawm cov pa hluav taws xob siab tswj solenoid thiab PCM (Powertrain Control Module).
  5. Qhib nyob rau hauv lub hwj chim mov Circuit Court ntawm lub tso pa roj siab tswj solenoid thiab PCM.
  6. Luv luv rau hauv av nyob rau hauv lub hwj chim mov Circuit Court ntawm lub tso pa roj siab tswj electromagnet.
  7. Cov pa roj cua siab tswj relay yog faulty.
  8. Cov teeb meem tshwm sim nrog cov pa roj siab tswj solenoid lossis txawm tias muaj teeb meem nrog PCM (txawm tias qhov no tsis zoo li).

Txhawm rau daws qhov yuam kev no, kev kuaj mob yuav tsum tau ua, pib los ntawm kev kuaj xyuas cov xaim hluav taws xob thiab hluav taws xob sib txuas, thiab txuas ntxiv nrog kev tshuaj xyuas cov pa hluav taws xob tswj cov khoom siv xws li cov pa hluav taws xob manifold check valve, solenoids, thiab relays. Qhov feem ntau yuav ua rau muaj kev ua txhaum ntawm cov xaim hluav taws xob lossis cov khoom siv hluav taws xob ntawm qhov system.

Cov tsos mob ntawm tus lej yuam kev yog dab tsi? P0477?

Cov tsos mob cuam tshuam nrog P0477 chaws yuav suav nrog:

  1. Lub teeb pom kev tsis zoo (MIL) lossis "Check Engine" teeb los.
  2. Tsis xav tau lub cav fais fab.
  3. Kev poob ntawm lub cav ua haujlwm, suav nrog cov teeb meem traction.
  4. Ua kom sov lub sij hawm rau lub cav txias.

Cov tsos mob no yuav qhia tau hais tias muaj teeb meem tsis tshua muaj siab nyob rau hauv lub tso pa tawm tswj system.

Yuav ua li cas kuaj tau tus lej txhaum P0477?

Txhawm rau tiv thaiv qhov yuam kev P0477, nws raug nquahu kom ua raws li cov kauj ruam no:

  1. Tshawb xyuas thiab kho qhov txhaws rov qab siab cov yeeb nkab.
  2. Kho, ntxuav los yog hloov cov pa tawm backpressure sensor.
  3. Kho lossis hloov cov pa hluav taws xob siab xyuas valve.
  4. Tshawb xyuas thiab, yog tias tsim nyog, kho qhov luv luv lossis txiav tawm lub siab valve thaiv kab hluav taws xob.
  5. Txheeb xyuas qhov kev sib txuas hluav taws xob hauv lub nraub qaum valve Circuit Court. Kho lossis hloov yog tias tsim nyog.
  6. Hloov warped tso rov qab siab valve solenoids.
  7. Kho lossis hloov cov khoom siv hluav taws xob puas xws li cov xov hlau thiab cov khoom sib txuas.
  8. Yog tias tag nrho lwm cov kauj ruam ua tsis tiav, xav txog kev rov tsim kho PCM yuam kev (lub cav tswj module), txawm hais tias qhov no tsis zoo li.
  9. Nws tseem tsim nyog kuaj xyuas thiab kho cov teeb meem cuam tshuam nrog lwm cov lej yuam kev hauv PCM uas yuav cuam tshuam rau lub zog rov qab siab.
  10. Ua ntej ua cov kauj ruam no, nws raug nquahu kom koj txheeb xyuas Cov Kev Pabcuam Kev Tshaj Tawm (TSB) rau koj lub tsheb tshwj xeeb kom ntseeg tau tias lub tuam txhab tsheb tsis tau muab PCM firmware lossis reprogramming los daws qhov teeb meem no.
  11. Nco ntsoov ua cov kev sim uas siv lub cuab yeej scan kom tshem tawm DTCs ntawm lub cim xeeb thiab pom tias P0477 code rov qab los tom qab kho tiav.

Kev kuaj mob yuam kev

Kev kuaj pom tsis pom ntawm qhov txhaws rov qab siab: Lub raj txhaws lossis txhaws rov qab siab tuaj yeem yog qhov ua rau ntawm P0477 code, txawm li cas los xij, qee zaum nws tuaj yeem plam thaum kuaj thawj zaug. Nws yog ib qho tsim nyog yuav tsum tau ua tib zoo saib xyuas qhov no thiab xyuas qhov xwm txheej ntawm lub raj thaum lub sijhawm kuaj thawj zaug ntawm qhov system.

Txoj cai txhaum loj npaum li cas? P0477?

Teeb meem code P0477, cuam tshuam nrog qis qis qis valve tswj, tuaj yeem cuam tshuam rau kev ua haujlwm ntawm lub cav thiab kev ua haujlwm, tshwj xeeb tshaj yog thaum pib txias. Txawm li cas los xij, qhov no tsis yog qhov teeb meem tseem ceeb uas yuav nres lub cav tam sim lossis ua rau muaj kev phom sij rau tus neeg tsav tsheb. Txawm li cas los xij, yog tias P0477 code txuas ntxiv mus, nws yuav ua rau muaj roj ntau ntxiv, txo lub zog, thiab lub sijhawm ua kom sov lub cav ntev dua. Nws raug nquahu kom daws qhov teeb meem no kom sai li sai tau kom tsis txhob muaj teeb meem ntxiv thiab ua kom lub cav ua haujlwm zoo li qub.

Kev kho dab tsi yuav pab tshem tawm cov cai? P0477?

Txhawm rau daws qhov P0477 Exhaust Pressure Valve Regulation Low code, ua cov kev kho hauv qab no:

  1. Kev Kho thiab Kho Lub Clocked Back Pressure Tube: Tshawb xyuas cov blockages hauv cov yeeb nkab tso tawm.
  2. Kho, tu thiab hloov cov pa tawm backpressure sensor: EBP sensor yuav xav tau kev tu lossis hloov.
  3. Hloov cov pa cua siab check valve: Yog tias lub valve puas lossis tsis ua haujlwm raug, nws yuav tsum tau hloov pauv.
  4. Kho lub luv luv los yog disconnected tso siab valve harness: Txheeb xyuas qhov xwm txheej ntawm cov xov hlau thiab kho lossis hloov lawv yog tias tsim nyog.
  5. Txheeb xyuas qhov kev sib txuas hluav taws xob hauv qhov tso tawm rov qab siab valve Circuit Court: Ua tib zoo saib xyuas cov xwm txheej ntawm kev sib txuas hluav taws xob thiab kho lossis hloov yog tias tsim nyog.
  6. Hloov deformed tso rov qab siab valve solenoids: Yog tias cov solenoids puas lawm, hloov lawv.
  7. Kho lossis hloov cov khoom siv hluav taws xob puas xws li cov xov hlau thiab cov khoom sib txuas: Txheeb xyuas cov kab hluav taws xob puas thiab kho lossis hloov cov khoom puas.
  8. Restoring ib tug faulty PCM: Muaj tsawg zaus, lub cav tswj module (PCM) yuav tsum tau kho lossis hloov.
  9. Kev kuaj mob thiab kev daws teeb meem cuam tshuam nrog lwm cov lej hauv PCM ntsig txog qhov tso tawm rov qab siab: Txheeb xyuas lwm cov lej ntsig txog thiab daws teeb meem yog tias muaj.

Nco ntsoov ua kev kuaj mob thiab kho raws li lub tsheb tsim cov lus pom zoo thiab siv cov khoom siv raug. Nws tseem pom zoo kom koj hu rau tus kws kho tsheb uas tsim nyog lossis lub khw kho tsheb kom raug kuaj xyuas thiab daws qhov teeb meem P0477 code.

P0477 Cav Code yog dab tsi [Quick Guide]

P0477 - Cov ntaub ntawv tshwj xeeb ntawm hom


Ntxiv ib saib