P0408 Exhaust Gas Recirculation Sensor "B" Input Siab

P0408 – OBD-II Teeb meem Code Technical Description

Teeb meem code P0408 qhia tias PCM tau kuaj pom muaj teeb meem nrog EGR system. Thaum qhov kev ua yuam kev no tshwm sim ntawm lub tsheb lub dashboard, qhov ntsuas lub cav yuav teeb, txawm li cas los xij, nws yuav tsum tau muab sau tseg tias hauv qee lub tsheb qhov ntsuas no yuav tsis pom tam sim ntawd, tab sis tsuas yog tom qab kuaj pom qhov yuam kev ntau zaus.

Qhov txhaum cai txhais li cas P0408?

Teeb meem code P0408 qhia tias muaj teeb meem nrog cov pa roj recirculation (EGR) system. Cov cai no tshwm sim thaum lub cav tswj module (PCM) pom lub teeb liab siab tawm ntawm EGR "B" sensor. Thaum qhov kev ua yuam kev no tshwm sim ntawm lub tsheb lub dashboard, qhov ntsuas lub cav yuav teeb, txawm li cas los xij, nws yuav tsum tau muab sau tseg tias hauv qee lub tsheb qhov ntsuas no yuav tsis pom tam sim ntawd, tab sis tsuas yog tom qab kuaj pom qhov yuam kev ntau zaus.

Tej zaum ua rau

Qee qhov laj thawj rau P0408 teeb meem code:

• Clogging los yog thaiv EGR valve.
• Malfunction ntawm lub manifold cua siab sensor.
• Teeb meem nrog hluav taws xob Circuit Court txuas EGR valve rau PCM.
• Kev teeb tsa tsis raug lossis ua haujlwm tsis zoo ntawm EGR valve.
• Teeb meem nrog EGR system nws tus kheej, xws li xau lossis kev puas tsuaj.

Cov tsos mob ntawm tus lej yuam kev yog dab tsi? P0408?

Cov tsos mob rau DTC P0408 yuav suav nrog cov hauv qab no:

• Lub Check Engine teeb ntawm lub dashboard los rau.
• Poob lub zog ntawm lub cav lossis lub cav tsis sib xws.
• Kev siv roj ntau ntxiv.
• Nce emissions ntawm nitrogen oxides (NOx) los ntawm cov pa system.
• Nws muaj peev xwm hais tias lub tsheb yuav tsis dhau qhov kev xeem emissions yog tias xav tau los ntawm cov cai hauv zos.

Yuav ua li cas kuaj tau tus lej txhaum P0408?

Txhawm rau kuaj xyuas DTC P0408, cov kauj ruam hauv qab no raug pom zoo:

1. Txheeb xyuas Lub Teeb Tsav Tsheb: Yog tias Lub Teeb Tsav Tsheb Teeb pom kev ntawm koj lub dashboard, txuas lub tsheb mus rau lub cuab yeej kuaj mob kom tau txais cov lej yuam kev thiab cov ntaub ntawv ntxiv txog qhov teeb meem.
2. Tshawb xyuas kev sib txuas thiab cov xov hlau: Txheeb xyuas qhov kev sib txuas thiab cov xov hlau txuas nrog Cov Hluav Taws Xob Hluav Taws Xob Recirculation (EGR) system rau corrosion, puas, lossis tawg.
3. Tshawb xyuas EGR valve: Txheeb xyuas EGR valve rau qhov ua tau tsis xws luag lossis txhaws. Ntxuav lossis hloov lub valve yog tias tsim nyog.
4. Xyuas cov sensors: Xyuas cov sensors ntsig txog EGR system, xws li EGR valve txoj hauj lwm sensor thiab manifold siab sensor, rau kev ua haujlwm kom raug.
5. Xyuas manifold siab: Siv lub ntsuas ntsuas siab los kuaj xyuas lub siab manifold thaum lub cav khiav. Xyuas kom meej tias cov kev xav tau ntawm manifold yog raws li qhov xav tau raws li kev ua haujlwm.
6. Txheeb xyuas qhov system txias: Tshawb xyuas lub cav txias rau cov teeb meem uas tuaj yeem ua rau kom siab manifold kub thiab yog li P0408 code.
7. Tshawb xyuas Cov Kab Nqus Tsev: Txheeb xyuas cov kab nqus tsev txuas nrog EGR valve kom xau lossis puas.
8. Tshawb xyuas PCM software: Yog tias tsim nyog, hloov kho koj lub PCM software mus rau qhov tseeb version, vim qee zaum kev hloov kho tuaj yeem kho cov teeb meem paub nrog EGR system.

Tom qab ua tiav cov kauj ruam no, nws raug nquahu kom txuas lub tsheb mus rau lub tshuab kuaj kab mob dua thiab tshem tawm cov lej yuam kev. Yog tias qhov teeb meem tshwm sim thiab P0408 code rov tshwm sim, kev tshawb nrhiav tob lossis kev sab laj nrog tus kws tshaj lij yuav xav tau.

Kev kuaj mob yuam kev

Thaum kuaj pom DTC P0408, cov teeb meem hauv qab no yuav tshwm sim:

• Kev txhais lus yuam kev yuam kev: Qee zaum cov kws kho tsheb yuav txhais yuam kev P0408 code thiab pib hloov cov khoom uas yuav ua tau zoo. Qhov no yuav ua rau cov nqi kho tsis tsim nyog.
• Kev kuaj mob tsis txaus: Kev ua haujlwm tsis zoo nyob rau hauv Exhaust Gas Recirculation (EGR) system tuaj yeem tshwm sim los ntawm ntau yam, thiab kev kuaj mob tsis raug tuaj yeem ua rau lub hauv paus ntawm qhov teeb meem tsis raug txheeb xyuas kom raug.
• Hla kev kuaj mob rau lwm yam: Qee zaum cov kws kho tsheb tsuas yog tsom rau ntawm EGR valve thiab tsis kuaj lwm yam khoom xws li cov sensors, cov xov hlau lossis lub siab manifold, uas tuaj yeem ua rau kev kuaj tsis tiav.
• Malfunction ntawm lub scanner lossis cov cuab yeej kuaj mob: Qee lub sij hawm ua yuam kev tuaj yeem tshwm sim vim yog cov khoom siv tshuaj ntsuam xyuas tsis raug lossis lub tshuab scanner, uas tuaj yeem txhais cov lej yuam kev lossis muab cov ntaub ntawv tsis raug txog qhov xwm txheej.
• Fault nyob rau hauv lwm yam systems: Qee zaum manifold siab lossis teeb meem sensor tuaj yeem ua rau P0408 tshwm sim txawm tias EGR valve ua haujlwm ib txwm. Qhov no yuav tsis nco thaum kuaj mob.

Txhawm rau zam qhov yuam kev no, nws yog ib qho tseem ceeb uas yuav tsum tau ua qhov kev kuaj mob dav dav uas suav nrog kev tshuaj xyuas txhua yam cuam tshuam nrog EGR system, nrog rau kev siv cov cuab yeej kuaj xyuas kom ntseeg tau thiab hloov tshiab. Yog tias tsim nyog, nws yog qhov zoo dua los tiv tauj ib tus kws kho tsheb tus kws kho tsheb kom raug kuaj xyuas thiab kho qhov teeb meem.

Txoj cai txhaum loj npaum li cas? P0408?

Teeb meem code P0408 qhia txog teeb meem nrog cov pa roj recirculation (EGR) system. Txawm hais tias qhov no tsis yog qhov tsis ua haujlwm tseem ceeb, nws tuaj yeem ua rau muaj ntau yam teeb meem, suav nrog nce nitrogen oxide emissions, txo lub tsheb ib puag ncig kev ua tau zoo, thiab poob ntawm kev ua haujlwm thiab kev lag luam roj.

Tsis tas li ntawd, tus lej P0408 tuaj yeem ua rau lub tsheb ua tsis tiav qhov kev xeem emissions, uas tuaj yeem ua rau nws tsis tsim nyog yog tias qhov teeb meem tsis raug kho.

Txawm hais tias tus lej P0408 tsis yog qhov teeb meem loj heev, nws tseem yuav tsum tau ua tib zoo saib xyuas thiab kho raws sijhawm kom tsis txhob muaj teeb meem ntxiv rau lub tsheb.

Kev kho dab tsi yuav pab tshem tawm cov cai? P0408?

Kev daws teeb meem DTC P0408 feem ntau suav nrog cov kauj ruam kho hauv qab no:

1. Xyuas cov pa roj recirculation (EGR) system rau thaiv los yog puas.
2. Ntxuav lossis hloov EGR valve yog tias pom muaj clogs.
3. Txheeb xyuas cov xov hlau sib txuas thiab cov khoom sib txuas nrog EGR valve rau corrosion lossis tawg.
4. Tshawb xyuas cov kev nyeem ntawm cov sensors thiab huab cua siab sensors hauv EGR system.
5. Tshawb xyuas kev ua haujlwm ntawm lub tshuab hluav taws xob tswj hluav taws xob (ECM) rau kev ua haujlwm tsis zoo lossis ua haujlwm tsis zoo.
6. Ntxuav lossis hloov lub lim hauv EGR system, yog tias tsim nyog.
7. Tshawb xyuas cov kab nqus tsev nrog EGR valve kom xau.

Tom qab ua tiav cov kauj ruam no, nws raug nquahu kom koj sim ua qhov yuam kev thiab kev sib tsoo kom paub tseeb tias qhov teeb meem raug daws thiab P0408 code tsis tshwm sim ntxiv lawm. Yog tias qhov teeb meem tshwm sim, kev kuaj mob siab dua lossis hloov EGR cov txheej txheem yuav tsum tau ua.

Yuav kho P0408 Cav Code li cas hauv 3 feeb [2 Txoj Kev DIY / Tsuas yog $4.24]

P0408 - Cov ntaub ntawv tshwj xeeb ntawm hom

Teeb meem code P0408 tuaj yeem siv rau ntau hom tsheb, tab sis kev txiav txim siab yuav txawv me ntsis nyob ntawm cov chaw tsim khoom, cov npe ntawm qee lub tsheb hom nrog lawv cov kev txiav txim siab:

• Ford: Exhaust gas recirculation (EGR) system - valve teeb liab siab.
• Chevrolet: EGR sensor "A" - voltage siab dhau.
• Toyota: EGR siab sensor - voltage siab dhau.
• Hasdas: Siab teeb liab theem ntawm cov pa roj recirculation (EGR) system.
• Volkswagen: Exhaust gas recirculation (EGR) valve – teeb liab theem siab dhau lawm.
• Nissan: EGR sensor "A" - voltage siab dhau.
• BMW: EGR valve Circuit Court voltage siab dhau lawm.

Thov xa mus rau phau ntawv kho lossis phau ntawv qhia kev pabcuam rau koj lub hom tsheb tshwj xeeb kom paub meej ntxiv txog kev txiav txim siab P0408 teeb meem code.