OBD2 check engine light codes: poori list aur matlab
Dashboard par check engine light jale to gaari ke computer mein ek code mehfooz ho jata hai. OBD2 scanner laga kar yeh code parha ja sakta hai, jaise P0300 ya P0420. Neeche aam codes ka matlab hai.
Update: 12-Nov-2026
Yeh P0 se shuru hone wale aam (generic) codes hain jin ka matlab international standard ke mutabiq har OBD2 wali gaari mein ek hi hai. P1 se shuru hone wale codes har company ke apne hote hain aur yahan nahi hain. Code sirf batata hai ke computer ne masla kahan dekha; kaunsa part kharab hai, yeh mechanic test kar ke batata hai. Purani carburettor wali gaariyon mein OBD2 nahi hota.
Koi bhi code aaye to pehle yeh karein
- Check engine light jal-bujh (flash) rahi ho to gaari aahista chala kar seedha mechanic ke paas le jayein, ya mehfooz jagah rok kar mechanic bulayein.
- Temperature ki sui laal par ho, oil ki laal light jale, ya engine se tez awaz ya dhuan aaye to fauran mehfooz jagah rok kar engine band karein.
- Scanner par aane wale saare codes likh lein, sirf yeh wala nahi. Code mitane se pehle likhna zaroori hai, kyun ke saath wale codes se mechanic ko asal wajah jaldi milti hai.
- Petrol dalwane ke baad light jali ho to tank ka dhakkan dekhein ke 'click' tak band hai.
- Engine band kar ke battery ke terminals dekhein: dheele na hon aur un par safed ya hara zang na jama ho.
Hifazat: garam engine par radiator ka dhakkan na kholein, khaulta paani nikal kar jala sakta hai. Chalte engine mein pankhe aur belt ke paas haath na le jayein. Petrol ki boo aaye to engine band karein, aag ya sigarette paas na layein aur mechanic bulayein.
Hawa, temperature aur throttle ke sensors (P0100 se P0128)
Yeh sensors computer ko batate hain ke engine mein kitni hawa ja rahi hai, woh kitni garam hai aur accelerator kitna daba hai.
| Code | Matlab |
|---|---|
| P0100 | MAF sensor (hawa ka bahao naapne wala) ki circuit mein kharabi. |
| P0101 | MAF sensor (hawa ka bahao naapne wala) ki reading sahi range mein nahi (range/performance). Tafseel |
| P0102 | MAF sensor (hawa ka bahao naapne wala) ka signal had se kam (low input). |
| P0103 | MAF sensor (hawa ka bahao naapne wala) ka signal had se zyada (high input). |
| P0105 | MAP sensor (intake mein hawa ka dabao naapne wala) ki circuit mein kharabi. |
| P0106 | MAP sensor (intake mein hawa ka dabao naapne wala) ki reading sahi range mein nahi (range/performance). |
| P0107 | MAP sensor (intake mein hawa ka dabao naapne wala) ka signal had se kam (low input). |
| P0108 | MAP sensor (intake mein hawa ka dabao naapne wala) ka signal had se zyada (high input). |
| P0110 | IAT sensor (engine mein jaane wali hawa ka temperature) ki circuit mein kharabi. |
| P0111 | IAT sensor (engine mein jaane wali hawa ka temperature) ki reading sahi range mein nahi (range/performance). |
| P0112 | IAT sensor (engine mein jaane wali hawa ka temperature) ka signal had se kam (low input). |
| P0113 | IAT sensor (engine mein jaane wali hawa ka temperature) ka signal had se zyada (high input). |
| P0115 | ECT sensor (coolant ya radiator ke paani ka temperature) ki circuit mein kharabi. |
| P0116 | ECT sensor (coolant ya radiator ke paani ka temperature) ki reading sahi range mein nahi (range/performance). |
| P0117 | ECT sensor (coolant ya radiator ke paani ka temperature) ka signal had se kam (low input). |
| P0118 | ECT sensor (coolant ya radiator ke paani ka temperature) ka signal had se zyada (high input). |
| P0120 | Throttle ya accelerator position sensor 'A' (TPS) ki circuit mein kharabi. |
| P0121 | Throttle ya accelerator position sensor 'A' (TPS) ki reading sahi range mein nahi (range/performance). |
| P0122 | Throttle ya accelerator position sensor 'A' (TPS) ka signal had se kam (low input). |
| P0123 | Throttle ya accelerator position sensor 'A' (TPS) ka signal had se zyada (high input). |
| P0128 | Coolant thermostat: engine apne sahi temperature tak garam nahi ho raha. Tafseel |
Oxygen (O2) sensors (P0130 se P0141)
Sensor 1 catalytic converter se pehle hota hai aur Sensor 2 us ke baad. Bank 1 engine ki woh taraf hai jahan cylinder 1 hai.
| Code | Matlab |
|---|---|
| P0130 | Oxygen (O2) sensor, Bank 1 Sensor 1 (catalytic converter se pehle): circuit mein kharabi. |
| P0131 | Oxygen (O2) sensor, Bank 1 Sensor 1 (catalytic converter se pehle): voltage had se kam (low voltage). |
| P0132 | Oxygen (O2) sensor, Bank 1 Sensor 1 (catalytic converter se pehle): voltage had se zyada (high voltage). |
| P0133 | Oxygen (O2) sensor, Bank 1 Sensor 1 (catalytic converter se pehle): der se jawab de raha hai (slow response). |
| P0134 | Oxygen (O2) sensor, Bank 1 Sensor 1 (catalytic converter se pehle): signal mein koi harkat nahi (no activity). |
| P0135 | Oxygen (O2) sensor, Bank 1 Sensor 1 (catalytic converter se pehle): heater ki circuit mein kharabi. Tafseel |
| P0136 | Oxygen (O2) sensor, Bank 1 Sensor 2 (catalytic converter ke baad): circuit mein kharabi. |
| P0137 | Oxygen (O2) sensor, Bank 1 Sensor 2 (catalytic converter ke baad): voltage had se kam (low voltage). |
| P0138 | Oxygen (O2) sensor, Bank 1 Sensor 2 (catalytic converter ke baad): voltage had se zyada (high voltage). |
| P0139 | Oxygen (O2) sensor, Bank 1 Sensor 2 (catalytic converter ke baad): der se jawab de raha hai (slow response). |
| P0140 | Oxygen (O2) sensor, Bank 1 Sensor 2 (catalytic converter ke baad): signal mein koi harkat nahi (no activity). |
| P0141 | Oxygen (O2) sensor, Bank 1 Sensor 2 (catalytic converter ke baad): heater ki circuit mein kharabi. |
Petrol aur hawa ka mixture (lean / rich)
Bank 2 sirf V6 ya V8 jaise engines mein hota hai. 4 cylinder engine mein sirf Bank 1 hota hai.
Misfire, knock aur crank/cam sensors (P0300 se P0340)
Misfire ke codes ke saath light flash kare to gaari tez na chalayein aur jaldi mechanic ko dikhayein.
| Code | Matlab |
|---|---|
| P0300 | Kai cylinders mein, ya kabhi kisi aur kabhi kisi mein, misfire (random/multiple misfire). Tafseel |
| P0301 | Cylinder 1 mein misfire: is cylinder mein petrol theek se nahi jal raha. Tafseel |
| P0302 | Cylinder 2 mein misfire: is cylinder mein petrol theek se nahi jal raha. Tafseel |
| P0303 | Cylinder 3 mein misfire: is cylinder mein petrol theek se nahi jal raha. Tafseel |
| P0304 | Cylinder 4 mein misfire: is cylinder mein petrol theek se nahi jal raha. Tafseel |
| P0325 | Knock sensor 1 (Bank 1 ya akela sensor) ki circuit mein kharabi. |
| P0328 | Knock sensor 1 (Bank 1 ya akela sensor) ka signal had se zyada (high input). |
| P0335 | Crankshaft position sensor 'A' ki circuit mein kharabi. Tafseel |
| P0340 | Camshaft position sensor 'A' ki circuit mein kharabi. Tafseel |
Dhuan aur petrol ke bukharat: EGR, catalytic converter, EVAP
EVAP ke codes aksar dheele petrol tank ke dhakkan se aate hain. Pehle dhakkan check karein.
| Code | Matlab |
|---|---|
| P0400 | EGR (exhaust gas recirculation) ke flow mein kharabi. |
| P0401 | EGR ka flow zaroorat se kam (insufficient flow). |
| P0420 | Catalytic converter ki karkardagi had se kam (catalyst efficiency below threshold), Bank 1. Tafseel |
| P0430 | Catalytic converter ki karkardagi had se kam (catalyst efficiency below threshold), Bank 2. |
| P0440 | EVAP system (petrol ke bukharat wala system) mein kharabi. |
| P0442 | EVAP system mein chhota leak (small leak). Tafseel |
| P0446 | EVAP system ke vent control ki circuit mein kharabi. |
| P0455 | EVAP system mein bara leak (large leak), aksar dheela fuel cap. Tafseel |
| P0456 | EVAP system mein bohat chhota leak (very small leak). |
Raftaar, idle aur bijli ka voltage (P0500 se P0563)
Voltage ke codes mein pehle battery ke terminals aur battery ki halat dekhein.
| Code | Matlab |
|---|---|
| P0500 | Gaari ki raftaar naapne wale sensor 'A' (vehicle speed sensor) mein kharabi. |
| P0505 | Idle control system mein kharabi: engine khali raftaar par theek nahi ruk raha. Tafseel |
| P0506 | Idle RPM zaroorat se kam. |
| P0507 | Idle RPM zaroorat se zyada. |
| P0562 | System voltage kam: battery ya alternator (dynamo) ki charging kamzor. |
| P0563 | System voltage zyada: aksar alternator zyada charge kar raha hai. |
Aam sawal
Check engine light kyun jalti hai?
Jab gaari ka computer engine, sensors ya dhuan saaf karne wale system mein koi kharabi dekhta hai to light jala deta hai aur ek code mehfooz kar leta hai. Wajah dheela petrol ka dhakkan bhi ho sakti hai aur misfire jaisi sangeen kharabi bhi, is liye code parhna zaroori hai.
Check engine light flash kare to kya karein?
Flash karti light ka matlab aksar tez misfire hota hai. Gaari tez na chalayein aur bojh na daalein. Aahista chala kar seedha mechanic ke paas jayein, ya mehfooz jagah rok kar mechanic bulayein. Chalate rehne se catalytic converter aur engine ko nuqsan ho sakta hai.
OBD2 scanner se code kaise parhein?
OBD2 ka socket aam tor par driver ki taraf steering ke neeche dashboard mein hota hai. Gaari band kar ke scanner lagayein, chaabi on karein aur scanner par codes parhein. Saste Bluetooth scanner mobile app ke saath bhi code dikha dete hain.
Kya code mita dene se masla hal ho jata hai?
Nahi. Code mitane se sirf light bujhti hai, kharabi wahin rehti hai. Agar wajah door nahi hui to code kuch der ya kuch din mein wapas aa jayega. Mitane se pehle code zaroor likh lein.
Bank 1, Bank 2, Sensor 1 aur Sensor 2 ka kya matlab hai?
Bank 1 engine ki woh taraf hai jahan cylinder 1 hai. Bank 2 sirf V6 ya V8 jaise engines mein hota hai; 4 cylinder engine mein sirf Bank 1 hota hai. Sensor 1 catalytic converter se pehle wala O2 sensor hai aur Sensor 2 us ke baad wala.
Light abhi bhi jal rahi hai?
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