P0257 Txhaj twj tso kua mis roj metering tswj, ntau B

P0257 – OBD-II Teeb meem Code Technical Description

Ntau yam / kev ua tau zoo ntawm cov roj ntsuas kev tswj ntawm cov twj tso kua mis B (cam / rotor / injector)

Qhov teeb meem code P0257 txhais li cas?

Cov teeb meem sib kis tau zoo / lub cav teeb meem P0257 siv rau ntau lub tsheb diesel nrog OBD-II, suav nrog Ford, Chevy, GMC, Ram thiab lwm yam, thiab qee zaum Mercedes Benz thiab VW. Txawm hais tias nws yog qhov dav, txoj kev kho yuav txawv nyob ntawm qhov tsim, qauv, thiab xyoo.

Lub twj tso kua mis txhaj tshuaj "B" metering tswj Circuit Court muaj xws li roj rail txoj hauj lwm (FRP) sensor thiab roj kom muaj nuj nqis actuator. FRP muab lub teeb liab rau PCM los tswj kev xa roj. P0257 tau tshwm sim yog tias FRP teeb liab tsis sib haum nrog PCM qhov kev cia siab, txawm tias ib pliag.

Code P0257 tuaj yeem tshwm sim vim muaj teeb meem kev siv tshuab lossis hluav taws xob, xws li teeb meem nrog EVAP lossis FRP sensor Circuit Court. Nco ntsoov sab laj nrog koj phau ntawv kho tsheb kom paub meej.

Tej zaum ua rau

Code P0257 tuaj yeem tshwm sim rau ntau yam, suav nrog:

1. qias neeg los yog txhaws roj lim.
2. Teeb meem nrog qhib lossis luv luv circuits.
3. Hluav taws xob txuas uas yuav qhib lossis luv.
4. Faulty roj twj tso kua mis.
5. Cov roj tswj actuator tsav tsheb nyob rau hauv lub powertrain tswj module yog faulty.

P0257 code kuj tuaj yeem tshwm sim los ntawm ntau yam, suav nrog kev qhib lossis luv luv hauv lub teeb liab Circuit Court rau FRP sensor, luv luv rau hauv av hauv FRP sensor teeb liab Circuit Court, lossis poob ntawm lub zog lossis hauv av rau FRP sensor. Nws kuj tseem muaj peev xwm hais tias FRP sensor nws tus kheej yog faulty, txawm hais tias qhov no tsis tshua muaj, lossis tsis tshua muaj PCM tsis ua haujlwm.

Dab tsi yog cov tsos mob ntawm teeb meem code P0257?

Cov tsos mob ntawm P0257 teeb meem chaws yuav suav nrog:

1. Malfunction indicator lamp (MIL) yog qhib.
2. Txo roj efficiency.

Feem ntau, cov tsos mob cuam tshuam nrog P0257 code tej zaum yuav yog me. Txoj cai no txuas ntxiv mus thiab lub teeb pom kev ntawm lub cav yuav tuaj. Qee zaum, lub tsheb yuav tsis pib lossis pib nyuaj, thiab tuaj yeem tso pa tawm ntau dua los ntawm cov pa tawm. Lub cav kuj tseem tuaj yeem ua rau tsis zoo thiab khiav nrawm, tshwj xeeb tshaj yog thaum sim nrawm.

Yuav kuaj xyuas qhov teeb meem li cas P0257?

Mechanics siv OBD-II scanner rau kev kuaj mob. Nws txuas rau lub tsheb lub computer thiab sau cov ntaub ntawv, suav nrog cov lej txhaum. Rov pib dua tus lej tuaj yeem qhia seb nws puas yuav rov qab los tom qab kuaj mob.

Qhov pib zoo yog ib txwm tshawb xyuas cov ntawv xov xwm kev pabcuam (TSBs) rau koj lub tsheb kom paub txog cov teeb meem paub thiab lawv cov kev daws teeb meem. Tom ntej no, nrhiav FRP sensor, uas feem ntau yog nyob rau ntawm lub twj tso kua mis roj. Tshawb xyuas lub connector thiab thaiv kev puas tsuaj thiab corrosion, huv si thiab lubricate lub terminals.

Yog tias koj muaj lub cuab yeej scan, tshem cov lej teeb meem thiab pom tias P0257 rov qab los. Yog tias muaj, tom qab ntawd koj yuav tsum kuaj xyuas FRP sensor thiab lwm yam circuits. Xyuas lub zog thiab grounding ntawm lub sensor. Yog tias tus lej rov qab, FRP sensor yuav tsum tau hloov. Nrog rau tus kws kho tsheb tsim nyog rau kev pab ntxiv thiab hloov PCM yog tias tsim nyog.

Kev kuaj mob yuam kev

Nws yog ib qho tseem ceeb uas yuav tsum nco ntsoov tias thaum kuaj pom cov teeb meem zoo li P0257, kev xav txog qhov ua rau tsis yog ib txwm muaj tseeb. Kev ntseeg tias qhov teeb meem nrog cov tshuaj txhaj tshuaj lossis cov tshuaj txhaj tshuaj tuaj yeem yog qhov yuam kev. Raws li koj tau sau tseg lawm, feem ntau qhov laj thawj tseem ceeb yog teeb meem nrog cov roj lim lossis lwm yam ntawm cov khoom siv roj.

Txhawm rau kuaj xyuas thiab kho qhov teeb meem kom raug, nws yog qhov zoo tshaj plaws uas yuav tsum tau kuaj xyuas siv cov cuab yeej thiab cov txheej txheem, thiab hu rau cov kws kho tsheb tsim nyog. Qhov no yuav pab koj kom tsis txhob muaj cov nqi tsim nyog ntawm kev hloov cov khoom tsis tsim nyog thiab ua rau koj lub tsheb rov qab mus rau hauv kev ua haujlwm sai dua.

Qhov teeb meem loj npaum li cas P0257?

Thov nco ntsoov tias lub teeb pom kev pom lub teeb pom kev zoo thiab cov lej yuam kev xws li P0257 yuav tsum tsis txhob raug ignored. Txawm hais tias lub tsheb zoo li ib txwm pom, muaj teeb meem kev ua haujlwm loj tuaj yeem tshwm sim, suav nrog kev nyuaj pib lub cav lossis tus cwj pwm tsis zoo ntawm lub tsheb. Xws li kev hloov pauv hauv kev ua haujlwm ntawm lub tsheb yuav cuam tshuam rau kev nyab xeeb thiab kev ua haujlwm ntawm lub tsheb.

Qhov loj ntawm qhov teeb meem nyob ntawm nws qhov xwm txheej. Yog tias qhov ua rau yog qhov teeb meem ntawm kev siv tshuab, nws tuaj yeem ua rau hnyav heev. Nyob rau hauv cov ntaub ntawv ntawm hluav taws xob tsis ua hauj lwm, txawm hais tias lawv tsis tshua muaj teeb meem, nws tseem yuav tsum tau sai sai daws qhov teeb meem raws li PCM (lub cav tswj module) tuaj yeem them nyiaj rau lawv rau qee qhov.

Kev kho dab tsi yuav daws tau tus lej P0257?

Nov yog ob peb kauj ruam uas kws kho tsheb tuaj yeem ua los daws P0257 code ntawm koj lub tsheb:

1. Txuas koj lub cuab yeej OBD-II txhawm rau kuaj xyuas koj lub tsheb.
2. Pib dua tus lej thiab rov kuaj xyuas seb P0257 code rov qab los.
3. Tshawb xyuas kev sib txuas hluav taws xob rau corrosion lossis lwm yam teeb meem. Yog tias tsim nyog, kho lossis hloov cov khoom puas.
4. Xav txog kev hloov cov lim roj.
5. Xav txog kev hloov koj lub twj tso kua mis roj.
6. Saib rau hauv kev hloov cov roj tswj actuator actuator nyob rau hauv lub kis tau tus mob tswj module.

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