P0470 Exhaust gas siab sensor malfunction
OBD2 yuam kev Codes

P0470 Exhaust gas siab sensor malfunction

27.09.2023 /

P0470 – OBD-II Teeb meem Code Technical Description

Pa pa siab sensor ua haujlwm tsis zoo

Qhov txhaum cai txhais li cas P0470?

Txoj cai kuaj mob dav dav no siv tau rau ntau lub tsheb, suav nrog Ford, Mercedes thiab Nissan, nrog ntau hom cav, suav nrog roj av thiab diesel, pib xyoo 2005. Nws muaj feem xyuam rau cov pa tso pa tawm thiab tej zaum yuav qhia tau hais tias muaj teeb meem hluav taws xob lossis kev siv tshuab. Qee zaum nws tuaj yeem nrog P0471 code, uas sib txawv ntawm lub sijhawm thiab qhov xwm txheej ntawm qhov tso pa tawm tsis ua haujlwm. Cov kauj ruam kho yog nyob ntawm cov chaw tsim khoom, hom roj thiab xim hlau.

Teeb meem code P0470 yog muaj nyob rau hauv ntau yam ua thiab qauv ntawm lub tsheb. Nws qhia tau hais tias muaj teeb meem nrog cov pa tso pa tawm lub siab sensor thiab tej zaum yuav yog vim muaj teeb meem hluav taws xob lossis kev siv tshuab. Qee lub sij hawm nws yog nrog los ntawm P0471 code, uas txawv nyob rau hauv lub sij hawm ntawm qhov teeb meem thiab qhov xwm ntawm lub sensor tsis ua hauj lwm. Cov kauj ruam kho yuav txawv nyob ntawm qhov chaw tsim khoom, hom roj, thiab xim hlau.

Lub Cuab Yeej Cuab Yeej Cuab Yeej (EBP) sensor ua lub luag haujlwm tseem ceeb hauv kev ntsuas cov pa tso pa tawm thiab tso cai rau kev tswj cov pa taws rov qab siab Regulator (EPR) los ntawm cov lus txib los ntawm Cav Tswj Module (ECM).

Raug Siab Raug Siab Raug Siab:

Muaj feem xyuam Exhaust Pressure Sensor Teeb meem Codes:

  • P0471 Cov pa roj cua siab Sensor "A" Circuit Court Range / Kev Ua Haujlwm
  • P0472 Tsawg teeb liab theem nyob rau hauv cov pa roj siab sensor Circuit Court "A"
  • P0473 Cov pa roj cua siab sensor "A" Circuit Court siab
  • P0474 Cov pa roj cua siab sensor "A" circuit malfunction

Tej zaum ua rau

Qhov P0470 code no yuav tshwm sim rau cov laj thawj hauv qab no:

  1. Muaj qhov thaiv hauv lub raj ntawm qhov tso pa tawm thiab lub siab sensor.
  2. Teeb meem nrog EGR lossis cua nkag qhov system, suav nrog them cov pa xau.
  3. Defective gas siab sensor.
  4. Tsis tshua muaj: Kev puas tsuaj rau Powertrain Control Module (PCM), txawm tias tsis zoo li.
  5. Muaj qhov thaiv hauv lub hose txuas lub siab sensor mus rau lub tso pa tawm manifold.
  6. Cov pa roj recirculation system ua haujlwm tsis zoo, uas tuaj yeem ua rau huab cua xau.
  7. Faulty exhaust backpressure sensor.
  8. Teeb meem nrog lub tso pa tawm backpressure sensor wiring harness, xws li qhib los yog luv luv circuits.
  9. Tsis zoo hluav taws xob kev twb kev txuas nyob rau hauv lub tso pa backpressure sensor Circuit Court.

Cov tsos mob ntawm tus lej yuam kev yog dab tsi? P0470?

Cov tsos mob ntawm tus lej P0470 suav nrog:

  1. Lub teeb pom kev ua haujlwm tsis zoo (MIL), tseem hu ua lub teeb kos lub cav, los ntawm.
  2. Muaj peev xwm tshwm sim ntawm lub teeb "Check Engine" ntawm lub vaj huam sib luag tswj nrog qhov txhaum cai khaws cia hauv ECM nco.
  3. Poob lub cav fais fab.
  4. Muaj peev xwm lov tes taw cov pa roj siab regulator.

Tus lej P0470 suav tias yog qhov hnyav vim tias nws tuaj yeem cuam tshuam rau lub tsheb tuav thiab kev ua haujlwm. Tab sis nws tuaj yeem raug tshem tawm yooj yim los ntawm kev hloov cov pa tsis zoo ntawm cov pa roj siab sensor.

Cov tsos mob ntawm tus lej P0470 kuj tseem muaj xws li:

  1. Lub tshuab kuaj xyuas lub teeb tas li.
  2. Tsis muaj hwj chim.
  3. Tsis ua rau rov tsim dua cov lim dej diesel, uas tuaj yeem ua rau lub cav pib tsis ua haujlwm.

Yuav ua li cas kuaj tau tus lej txhaum P0470?

Ib txoj hauv kev zoo los pib kuaj tus lej P0470 yog txhawm rau txheeb xyuas Cov Kev Pabcuam Kev Pabcuam (TSB) rau koj lub tsheb. Cov chaw tsim khoom yuav muab cov software hloov tshiab (firmware) rau PCM los kho qhov teeb meem no. Tom ntej no, nrhiav qhov tso pa tawm lub siab sensor ntawm koj lub tsheb thiab disconnect lub raj txuas mus rau lub tso pa tawm manifold.

Sim tshem cov raj no ntawm cov pa roj carbon uas yuav ua rau P0470 code. Yog hais tias lub raj yog huv si, xyuas cov connectors thiab xaim rau kev puas tsuaj los yog corrosion. Tom ntej no, sim lub 5V fais fab thiab sensor teeb liab circuits siv lub digital volt-ohmmeter (DVOM).

Xyuas kom tseeb tias lub sensor yog grounded kom zoo. Yog tias tag nrho cov kev xeem dhau lawm, yuav tsum tau hloov cov pa roj cua siab sensor. Yog tias tus lej P0470 tseem tshwm sim, qhov yuam kev PCM kuj yog qhov ua rau, tab sis nws tsuas tuaj yeem txiav txim siab tom qab hloov lub sensor thiab ua qhov kev sim ntxiv.

Kev kuaj mob yuam kev

Tej yam tshwm sim ntawm P0470 code

Thaum kuaj pom tus lej P0470, nws yog ib qho tseem ceeb uas yuav tau xav txog ntau qhov laj thawj uas tuaj yeem ua rau txoj cai no. Hauv qab no yog cov ntsiab lus tseem ceeb los xav txog:

  1. Thaiv nyob rau hauv lub raj los ntawm lub tso pa manifold mus rau lub siab sensor: Ib qho xwm txheej tshwm sim yog tias cov pa roj carbon tsim nyob rau hauv lub tso pa tawm, uas tuaj yeem ua rau muaj kev cuam tshuam hauv lub raj los ntawm lub siab sensor tau txais cov ntaub ntawv. Qhov no yuav ua rau kev nyeem ntawv tsis raug thiab P0470 code.
  2. Teeb meem nrog cov pa roj recirculation (EGR) system, cua nkag los yog them cov pa tawm: Cov teeb meem ntawm lub tshuab pa lossis cua tshuab tuaj yeem cuam tshuam rau lub siab hauv cov pa tawm thiab ua rau P0470 code. Kev ntsuam xyuas ntseeg tau ntawm cov khoom no tuaj yeem yog ib kauj ruam tseem ceeb.
  3. Exhaust gas siab sensor malfunction: Lub tso pa tawm lub siab sensor nws tus kheej yuav ua tsis tau lossis tsim cov cim tsis raug, ua rau P0470 code.
  4. Exhaust Back Pressure (EBP) Sensor Teeb meem: Lub tso pa tawm backpressure sensor yog ib qho tseem ceeb ntawm lub cav tswj qhov system thiab tuaj yeem cuam tshuam nrog P0470 code.
  5. Teeb meem nrog kev xaim thiab hluav taws xob sib txuas: Cov xov hlau puas, corrosion, lossis kev sib txuas hluav taws xob tsis zoo ntawm cov sensors thiab cov kev tswj xyuas tuaj yeem ua rau cov teeb liab tsis raug thiab P0470 code.

Cov peev txheej no ntawm P0470 code yog qhov tseem ceeb uas yuav tsum tau xav txog thaum kuaj xyuas thiab kho kom pom thiab kho lub hauv paus ntawm qhov teeb meem.

Txoj cai txhaum loj npaum li cas? P0470?

Teeb meem code P0470 qhia tias muaj teeb meem nrog lub tso pa tawm lub siab sensor lossis tso lub zog siab. Qhov no yuav cuam tshuam rau lub cav ua haujlwm, kev ua haujlwm thiab kev siv roj. Txawm hais tias qhov no tsis yog qhov xwm txheej tseem ceeb, nws yog qhov ua haujlwm tsis zoo uas tuaj yeem ua rau muaj teeb meem loj dua yog tias tsis kho. Nws raug nquahu kom koj muaj koj lub cav kuaj xyuas thiab kho los ntawm tus kws kho tsheb thaum P0470 code tshwm los tiv thaiv lub cav degradation thiab tswj lub cav ua haujlwm.

Kev kho dab tsi yuav pab tshem tawm cov cai? P0470?

Kev daws teeb meem P0470 code suav nrog ntau cov kauj ruam, nyob ntawm seb qhov laj thawj:

  1. Checking Technical Service Bulletins (TSB): Pib los ntawm kev nrhiav cov ntaub ntawv hauv cov ntawv xov xwm kev pabcuam, uas tej zaum yuav muaj cov chaw tsim khoom pom zoo los daws qhov teebmeem no. Cov chaw tsim khoom tuaj yeem muab PCM flashes / reflashes uas yuav tshem tawm cov cai.
  2. Txheeb xyuas qhov tso pa tawm siab sensor: Tshem tawm cov pa hluav taws xob siab sensor thiab xyuas cov pa roj carbon deposits lossis puas. Ntxuav lossis hloov lub sensor yog tias tsim nyog.
  3. Kev kuaj kab mob: Saib xyuas cov xaim hluav taws xob, nrhiav kev puas tsuaj, corrosion lossis tawg ntawm cov xov hlau. Tshem tawm cov connectors thiab ntxuav lawv yog tias tsim nyog.
  4. Tshawb xyuas lub zog thiab teeb liab circuits: Siv lub ntsuas hluav taws xob digital volt-ohm (DVOM), xyuas 5V lub zog thiab cov teeb liab circuits mus rau lub sensor. Xyuas kom tseeb tias qhov voltage ua tau raws li cov neeg tsim khoom specifications.
  5. Grounding check: Tshawb xyuas seb cov pa roj cua siab sensor puas yog hauv av.
  6. Tshawb xyuas lub raj thiab kev sib txuas: Ua tib zoo xyuas lub raj txuas lub turbocharger mus rau cov khoom noj khoom haus kom cov dej ntws tawm.
  7. Clearing yuam kev: Siv OBD-II scanner kom tshem P0470 code los ntawm PCM nco. Tom qab no, tsav lub tsheb thiab xyuas seb qhov yuam kev tshwm sim dua.
  8. Kev hloov Sensor: Yog tias qhov teeb meem tsis tuaj yeem daws tau los ntawm lwm txoj hauv kev, hloov cov pa roj siab sensor.
  9. PCM check: Yog tias tag nrho cov kauj ruam saum toj no tsis daws qhov teeb meem, tej zaum yuav muaj teeb meem nrog PCM. Txawm li cas los xij, qhov kev xaiv no yuav tsum tsuas yog suav tias yog qhov chaw kawg nkaus.

Nco ntsoov tias kev kuaj mob thiab kho yuav tsum tau ua los ntawm ib tus kws kho tsheb uas tsim nyog lossis chaw pabcuam los xyuas kom meej qhov laj thawj thiab kev daws teeb meem zoo ntawm P0470 code.

P0470 Cav Code yog dab tsi [Quick Guide]

P0470 - Cov ntaub ntawv tshwj xeeb ntawm hom

Ntxiv ib saib