P0721 Output Speed ​​​​Sensor Range/Performance

P0721 – OBD-II Teeb meem Code Technical Description

Output Speed ​​​​Sensor Range/Performance

Qhov txhaum cai txhais li cas P0721?

Teeb meem code P0721 yog ib hom OBD-II kis kab mob code uas siv rau cov tsheb ntawm ntau yam ua thiab qauv xws li VW, BMW, Mercedes, Chevrolet, GMC, Allison, Duramax, Dodge, Ram, Ford, Honda, Hyundai, Audi thiab lwm yam . Txawm hais tias feem ntau hauv qhov xwm txheej, cov kauj ruam kho tshwj xeeb yuav txawv nyob ntawm lub xyoo, tsim, qauv thiab cov khoom siv ntawm lub tsheb. Tus lej P0721 muaj feem cuam tshuam rau qhov kis tau tus mob tso zis ceev sensor thiab nws qhov kev ua kom muaj zog tuaj yeem tshwm sim los ntawm ntau yam txhaum xws li P0720, P0722 thiab P0723, uas qhia txog cov teeb meem tshwj xeeb.

Lub hom phiaj ntawm qhov kis tau tus mob tso zis ceev sensor yog muab cov ntaub ntawv kis tau tus mob ceev rau PCM (engine control module). Cov ntaub ntawv no yog xav tau los tswj cov kev hloov pauv solenoids thiab saib xyuas cov txheej txheem hloov ntawm lub iav, kev sib kis siab thiab, qee zaum, lub ntsuas ntsuas.

Ntawm cov tsheb uas muaj hluav taws xob tswj kev sib kis, qhov tso zis ceev sensor (OSS) nyob rau ntawm qhov kawg ntawm cov zis ncej. Nws ntsuas qhov kev sib hloov ceev, uas yog ib qho tseem ceeb rau kev txiav txim siab hloov lub sij hawm thiab lub zog hloov lub zog.

Thaum PCM / ECM txiav txim siab tias OSS sensor ua haujlwm tsis zoo lossis yog tias nws nyob sab nraud ntawm qhov qub, nws yuav ua rau P0721 code teeb. Cov cai no qhia txog cov teeb meem sib kis tau zoo thiab tuaj yeem ua rau kev ua haujlwm yuam kev ntawm lub zog hloov pauv, hloov sijhawm, thiab lwm yam tsis raug.

Tej zaum ua rau

Ua rau ntawm P0721 chaws suav nrog:

1. Teeb meem nrog kev xaim lossis kev sib txuas.
2. Lub kis tau tus mob kua kub sensor yog faulty.
3. Cov zis ncej ceev sensor yog faulty.
4. Faulty ceev sensor.
5. Faulty tso zis ceev sensor.
6. Cov dej qias neeg los yog kab mob kis tau.
7. qias neeg los yog clogged kis tau tus mob lim.
8. Faulty coolant kub sensor.
9. Lub cev tsis muaj zog kis tau tus mob valve.
10. Txwv kev hla hydraulic.
11. Faulty hloov solenoid.
12. Corroded los yog puas connector.
13. Faulty los yog puas lawm kab.
14. Faulty PCM (lub cav tswj module).

Thaum tus lej P0721 tshwm sim, koj yuav tsum ua qhov kev kuaj mob kom ntxaws thiab txheeb xyuas qhov laj thawj tshwj xeeb ntawm kev ua haujlwm tsis zoo txhawm rau txhawm rau kho qhov tsim nyog.

Cov tsos mob ntawm tus lej yuam kev yog dab tsi? P0721?

Cov tsos mob ntawm P0721 teeb meem code suav nrog:

1. Kev lag luam roj tsis zoo.
2. Txheeb xyuas lub cav teeb.
3. Teeb meem nrog kev hloov tsheb, suav nrog kev hloov pauv sai.
4. Kev ua haujlwm tsis raug ntawm lub gearbox.
5. Speedometer tsis ua haujlwm.
6. Sluggish engine hom.
7. Misfire los yog cav hesitation.

Yog tias cov tsos mob no tshwm sim, nws raug nquahu kom koj tshawb xyuas koj lub teeb pom kev ntawm lub cav thiab ua qhov kev kuaj mob los txiav txim seb qhov ua rau ntawm P0721 code.

Yuav ua li cas kuaj tau tus lej txhaum P0721?

Txhawm rau kuaj xyuas thiab daws qhov P0721 code, ua raws cov kauj ruam no:

1. Txheeb xyuas lwm cov lej kuaj mob hauv ECU.
2. Txheeb xyuas qhov xwm txheej ntawm cov kua dej sib kis thiab muaj cov khoom siv hlau uas tuaj yeem cuam tshuam rau OSS sensor.
3. Txheeb xyuas qhov xwm txheej ntawm cov hlua khi thiab cov khoom sib txuas rau corrosion, puas thiab luv circuits.
4. Xyuas qhov kis tau tus mob tso zis ceev sensor kom nws ua tau raws li cov chaw tsim khoom specifications.
5. Tshawb xyuas qhov kis tau tus mob input ncej ceev sensor thiab kis tau tus mob kua kub sensor.
6. Tshawb xyuas lub tsheb cov ntaub ntawv rau lub sijhawm kawg ntawm cov lim thiab cov kua dej sib kis tau hloov pauv.
7. Visually soj ntsuam cov hlua, kev sib txuas thiab cov khoom sib txuas rau kev puas tsuaj.
8. Tshawb xyuas qhov kev sib txuas ntawm kev sib kis kom muaj kev nyab xeeb thiab kev ywj pheej ntawm kev txav mus los.
9. Ua cov txheej txheem ntxiv raws li cov lus qhia tshwj xeeb thiab kev daws teeb meem rau koj lub tsheb.
10. Ua cov kev ntsuam xyuas txuas ntxiv ntawm kev xaim thiab kev sib txuas thaum lub hwj chim tawm los txheeb xyuas cov xaim tsis raug.

Cov kauj ruam no yuav pab txheeb xyuas thiab daws qhov ua rau ntawm tus lej P0721, nyob ntawm koj qhov xwm txheej tshwj xeeb thiab lub tsheb.

Kev kuaj mob yuam kev

Tus kws kho mob kuaj pom tus lej P0721 tuaj yeem ua rau cov teeb meem hauv qab no:

1. Hla lwm cov lej kuaj mob: Ua kom pom qhov tseem ceeb ntawm kev kuaj xyuas lwm cov lej uas yuav cuam tshuam rau kev sib kis lossis kev ua haujlwm ntawm lub cav.
2. Ua tsis tau zoo xyuas cov kua kis tau tus mob: Ua tsis tau raws li qhov xwm txheej thiab qib ntawm cov kua dej sib kis, uas yuav ua rau muaj kev kuaj mob tsis raug.
3. Ua Tsis Tau Tshuaj Xyuas Hlau Khaub Ncaws thiab Cov Txuas Txuas: Ua tsis pom kev tshawb xyuas cov xov hlau thiab cov khoom txuas rau corrosion, puas, lossis luv.
4. Hloov cov khoom yam tsis muaj kev kuaj mob ntxiv: Hloov cov sensors lossis xaim yam tsis muaj kev tshuaj xyuas ntxiv thiab kev sim yuav ua rau khib nyiab thiab raug nqi.
5. Tsis quav ntsej Technical Bulletins thiab Chaw Tsim Tshuaj Cov Lus Pom Zoo: Tsis quav ntsej cov ntaub ntawv los ntawm cov ntawv tshaj tawm kev tshaj lij (TSBs) thiab cov chaw tsim khoom cov lus pom zoo uas yuav qhia txog teeb meem tshwm sim lossis kho cov lus qhia tshwj xeeb.
6. Ua tsis tiav qhov kev xeem ntxiv: Ua tsis tiav qhov kev sim tsim nyog ntawm cov ntsuas ntsuas thiab cov khoom siv hluav taws xob, uas yuav ua rau muaj kev kuaj mob tsis raug.
7. Ua tsis tiav kev kuaj xyuas txuas ntxiv: Kev ua tsis tiav ntawm kev kuaj xyuas txuas ntxiv ntawm cov xov hlau thiab kev sib txuas yuav ua rau muaj qhov tsis zoo hauv cov xov hlau.
8. Tsis quav ntsej txog ib puag ncig: Tsis quav ntsej qhov cuam tshuam ntawm ib puag ncig yam xws li av, noo noo lossis kev co ntawm kev ua haujlwm sensor.

Cov kev ua yuam kev no tuaj yeem ua rau muaj qhov tsis zoo thiab cov nqi tsis tsim nyog rau kev hloov cov khoom uas tsis muaj qhov tsis zoo.

Txoj cai txhaum loj npaum li cas? P0721?

Teeb meem code P0721 cuam tshuam nrog cov kis tau tus mob tso zis ceev sensor tuaj yeem ua rau hnyav thiab muaj feem cuam tshuam rau kev ua haujlwm ntawm lub tsheb. Nov yog ob peb yam uas tuaj yeem hais txog qhov tseem ceeb ntawm txoj cai no:

1. Kev poob ntawm kev lag luam roj: Txij li cov cai no muaj feem xyuam nrog kev ua haujlwm ntawm kev sib kis, nws qhov kev muaj peev xwm ua rau muaj kev hloov pauv tsis raug thiab ua rau poob ntawm kev lag luam roj.
2. Kev pheej hmoo ntawm kev sib kis tawg: Cov neeg tsim khoom tau teeb tsa kev tswj hwm kev sib kis kom hloov cov iav kom raug raws li cov tswv yim los ntawm cov zis ceev sensor. Kev ua haujlwm tsis zoo ntawm qhov ntsuas no tuaj yeem ua rau hnyav lossis tsis raug hloov iav, uas tuaj yeem ua rau hnav thiab puas rau kev sib kis.
3. Kev tuav tsis zoo: Cov neeg tsim khoom siv tau cov ntaub ntawv los ntawm cov zis ceev sensor los kho lub cav thiab kev sib kis tau zoo hauv ntau qhov xwm txheej. Lub faulty sensor tuaj yeem cuam tshuam lub tsheb tuav.
4. Limp Hom: Qee qhov xwm txheej, thaum kuaj pom tus lej P0721, lub tsheb tswj qhov system tuaj yeem tso lub tsheb mus rau hauv hom qis, uas yuav txwv nws qhov kev ua tau zoo thiab ceev kom tsis txhob muaj kev puas tsuaj ntxiv.

Yog li, code P0721 yuav tsum tau txiav txim siab loj thiab yuav tsum tau saib xyuas tam sim ntawd. Txhawm rau kom tsis txhob muaj teeb meem ntxiv thiab kev puas tsuaj, nws raug nquahu kom koj sab laj nrog kws kho tsheb thiab kuaj xyuas thiab kho yog tias tsim nyog.

Kev kho dab tsi yuav pab tshem tawm cov cai? P0721?

Cov npe nram qab no yuav tsum tau kho kom daws tau DTC P0721:

1. Output Speed ​​​​Sensor (OSS) Kos: Tus kws kho tsheb yuav tsum xyuas qhov xwm txheej thiab kev teeb tsa kom zoo ntawm cov zis ceev sensor. Yog tias lub sensor puas lawm, nws yuav tsum tau hloov nrog ib qho tshiab.
2. Tshawb xyuas lub Input Shaft Speed ​​​​Sensor: Tus kws kho tsheb yuav tsum xyuas qhov xwm txheej thiab kev ua haujlwm kom zoo ntawm cov khoom siv hluav taws xob nrawm nrawm. Yog hais tias nws yog faulty, nws kuj yuav tsum tau hloov.
3. Txheeb xyuas qhov Transmission Fluid Temperature Sensor: Qhov sib kis ntawm cov kua dej ntsuas kub tuaj yeem cuam tshuam rau kev ua haujlwm ntawm kev tswj kev sib kis. Yog hais tias nws yog faulty, nws yuav tsum tau hloov.
4. Kev Tshawb Fawb Kev Txuas Hluav Taws Xob thiab Hluav Taws Xob: Ib tus kws kho tsheb yuav tsum kuaj xyuas txhua qhov kev sib txuas hluav taws xob, xaim, thiab cov khoom sib txuas nrog cov sensors thiab kev tswj kev sib kis. Yog tias pom muaj kev puas tsuaj, yuav tsum tau hloov cov xaim lossis kho.
5. Kev kuaj xyuas cov kua dej sib kis thiab qhov xwm txheej: Kev sib kis cov kua dej tsis raug lossis qhov xwm txheej tuaj yeem cuam tshuam rau kev ua haujlwm ntawm cov sensors thiab tswj qhov system. Yog tias tsim nyog, cov kua dej yuav tsum tau hloov pauv thiab qib nce mus rau qib yuav tsum tau ua.
6. Tshawb xyuas cov khoom hlau hauv cov kua xa hluav taws xob: Cov khoom hlau hauv cov kua dej yuav qhia tau tias muaj teeb meem hauv kev sib kis. Hauv qhov no, kev sib kis yuav tsum tau kho lossis hloov pauv.
7. Luam theej duab thiab rov pib dua qhov teeb meem code: Tom qab ua tiav cov haujlwm kho, tus kws kho tsheb yuav tsum luam theej duab lub kaw lus thiab rov pib dua P0721 teeb meem code.

Thov nco ntsoov tias qhov tseeb cov kauj ruam thiab kev ua haujlwm yuav txawv nyob ntawm qhov tsim, qauv thiab kev teeb tsa lub tsheb. Nws yog ib qho tseem ceeb kom muaj ib tus kws kho tsheb lossis lub khw kho tsheb kuaj xyuas thiab kho nws kom daws tau qhov teeb meem no.

P0721 Cav Code yog dab tsi [Quick Guide]

P0721 - Cov ntaub ntawv tshwj xeeb ntawm hom

Teeb meem code P0721 tuaj yeem tshwm sim ntawm cov tsheb sib txawv. Nov yog qee lub npe tsheb thiab lawv txhais ntawm P0721 code:

1. BMW – Transmission Output Speed ​​​​Sensor “A” – Low Signal
2. Mercedes-Benz - 3/4 iav ceev sensor - teeb liab tsawg dhau
3. Ford - Output Speed ​​​​Sensor - Teeb liab tsawg dhau
4. Chevrolet - Tawm Ceev Sensor (VSS) - Teeb liab tsawg dhau
5. Honda – Output Speed ​​​​Sensor (OSS) – Teeb liab tsawg dhau
6. Toyota – Exit Speed ​​​​Sensor (VSS) – Teeb liab tsawg dhau
7. Nissan – Output Speed ​​​​Sensor (OSS) – Teeb liab tsawg dhau
8. Hyundai - Output Speed ​​​​Sensor (OSS) - Teeb liab tsawg dhau
9. Audi – Kis ceev sensor 2 (G182) – teeb liab tsawg dhau

Thov nco ntsoov tias lub ntsiab lus tseeb thiab lub ntsiab lus ntawm P0721 code yuav txawv nyob ntawm koj lub tsheb qauv thiab kev teeb tsa kis. Nws yog ib qho tseem ceeb uas yuav tsum tau ua kom paub meej ntxiv txog kev kuaj mob thiab kho, suav nrog cov kev qhia tshwj xeeb thiab cov kev xav tau ntawm ib lub tsheb tshwj xeeb.