Que signifie votre code d’erreur ?
Que signifie votre code d’erreur ?
Recherche gratuite de codes défaut OBD2
Un code d’anomalie de diagnostic (DTC) est la façon dont votre voiture vous indique qu’un élément nécessite votre attention. Cette recherche gratuite couvre les 200 codes d’anomalie OBD2 les plus courants — leur signification en termes simples, leurs causes, leur niveau de gravité et la marche à suivre.
254 codes found
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- P0121 OBD-II code P0121 means the throttle position sensor A signal is present but doesn't correlate with expected throttle movement — usually a worn sensor track or dirty throttle body. Air IntakeMedium
- P0122 OBD-II code P0122 means the throttle position sensor A is reporting a signal lower than possible — typically a shorted signal wire or a bad sensor. Air IntakeHigh
- P0123 OBD-II code P0123 means the throttle position sensor A is reporting a signal higher than possible — typically an open ground or a failed sensor. Air IntakeHigh
- P0125 OBD-II code P0125 means the coolant is not reaching the temperature needed for closed-loop fuel control — the engine stays in open-loop enrichment for too long. Engine/PowertrainLow
- P0128 OBD-II code P0128 means the engine is not reaching operating temperature within the expected time — almost always a stuck-open thermostat. Engine/PowertrainLow
- P0130 OBD-II code P0130 flags a generic fault in the upstream O2 sensor circuit on bank 1 — the signal is out of range or invalid but not specifically stuck low or high. EmissionsMedium
- P0131 OBD-II code P0131 means the upstream oxygen sensor on bank 1 is reading persistently low voltage — usually a real lean condition or a dead sensor. EmissionsMedium
- P0132 OBD-II code P0132 means the upstream oxygen sensor on bank 1 is reading persistently high voltage — usually a real rich condition or a shorted sensor. EmissionsMedium
- P0133 OBD-II code P0133 means the upstream O2 sensor on bank 1 is responding too slowly — the sensor is ageing and can no longer switch fast enough for accurate fuel trim. EmissionsMedium
- P0134 OBD-II code P0134 means the upstream bank 1 O2 sensor signal is flatlined — the PCM sees no switching activity, so it can't run closed-loop fuel control. EmissionsMedium
- P0135 Dysfonctionnement du circuit de chauffage de la sonde O2 (Banc 1 Sonde 1) ÉmissionsFaible
- P0137 OBD-II code P0137 means the downstream O2 sensor on bank 1 is reading persistently low voltage — usually a bad sensor or a real lean exhaust condition. EmissionsLow
- P0138 OBD-II code P0138 means the downstream oxygen sensor on bank 1 is reading persistently high voltage — either a bad sensor or the catalyst is passing rich exhaust. EmissionsLow
- P0140 OBD-II code P0140 means the downstream bank 1 O2 sensor signal is flatlined — the PCM sees no activity, so catalyst efficiency monitoring can't run. EmissionsLow
- P0141 Dysfonctionnement du circuit de chauffage de la sonde O2 (Banc 1 Sonde 2) ÉmissionsFaible
- P0151 OBD-II code P0151 means the upstream oxygen sensor on bank 2 is reading persistently low voltage — usually a real lean condition or a dead sensor. EmissionsMedium
- P0152 OBD-II code P0152 means the upstream oxygen sensor on bank 2 is reading persistently high voltage — usually a real rich condition or a shorted sensor. EmissionsMedium
- P0155 OBD-II code P0155 flags a fault in the upstream O2 sensor heater circuit on bank 2 — the sensor can't reach operating temperature fast enough for closed-loop control. EmissionsLow
- P0170 OBD-II code P0170 flags a general fuel trim malfunction on bank 1 — the PCM's fuel-trim compensation has hit its limit in either the lean or rich direction. Fuel SystemMedium
- P0171 Système de correction de carburant trop pauvre (Banc 1) Système de carburantMoyen
- P0172 Système de correction de carburant trop riche (Banc 1) Système de carburantMoyen
- P0174 OBD-II code P0174 means the PCM is adding significant extra fuel on bank 2 to keep the mixture stoichiometric — the engine is running lean with fuel trims maxed out. Fuel SystemMedium
- P0175 OBD-II code P0175 means the PCM is pulling significant fuel out on bank 2 but can't compensate — the engine is running rich and fuel trims are maxed out negative. Fuel SystemMedium
- P0299 Condition de sous-pression du turbocompresseur/suralimenteur A Turbo/SuralimentationMoyen
- P0300 Détection de ratés d'allumage aléatoires/multiples cylindres AllumageMoyen
- P0301 OBD-II code P0301 means the PCM has detected misfires on cylinder 1 — an ignition, fuel, or compression problem is stopping that cylinder from firing properly. IgnitionHigh
- P0302 Détection de raté d'allumage sur le cylindre 2 AllumageMoyen
- P0303 OBD-II code P0303 means the PCM has detected misfires on cylinder 3 — an ignition, fuel, or compression problem is stopping that cylinder from firing properly. IgnitionHigh
- P0304 OBD-II code P0304 means the PCM has detected misfires on cylinder 4 — an ignition, fuel, or compression problem is stopping that cylinder from firing properly. IgnitionHigh
- P0305 OBD-II code P0305 means the PCM has detected misfires on cylinder 5 — an ignition, fuel, or compression problem is stopping that cylinder from firing properly. IgnitionHigh
- P0306 OBD-II code P0306 means the PCM has detected misfires on cylinder 6 — an ignition, fuel, or compression problem is stopping that cylinder from firing properly. IgnitionHigh
- P0307 OBD-II code P0307 means the PCM has detected misfires on cylinder 7 — an ignition, fuel, or compression problem is stopping that cylinder from firing properly. IgnitionHigh
- P0308 OBD-II code P0308 means the PCM has detected misfires on cylinder 8 — an ignition, fuel, or compression problem is stopping that cylinder from firing properly. IgnitionHigh
- P0316 OBD-II code P0316 flags a misfire during the first 1000 crankshaft revolutions after start — usually a cold-start ignition or fuel issue that stabilises once warm. IgnitionMedium
- P0325 OBD-II code P0325 means the PCM has detected a fault in the bank 1 knock sensor circuit — the engine can't retard timing to prevent detonation. IgnitionMedium
- P0335 Dysfonctionnement du circuit du capteur de position du vilebrequin Moteur/TransmissionÉlevé
- P0336 OBD-II code P0336 flags an implausible crankshaft position sensor signal — the pattern doesn't match expected engine rotation. Engine/PowertrainHigh
- P0337 OBD-II code P0337 flags a low or missing signal from the crankshaft position sensor — the PCM isn't getting a valid crank reference for ignition and injection timing. Engine/PowertrainHigh
- P0340 OBD-II code P0340 flags a fault in the camshaft position sensor circuit — the PCM cannot see cam position, which affects ignition and injection timing. Engine/PowertrainHigh
- P0341 OBD-II code P0341 means the camshaft position sensor signal is present but implausible — the pattern doesn't match the expected engine phase. Engine/PowertrainMedium
- P0351 OBD-II code P0351 flags a fault in ignition coil A — either the primary drive circuit is bad or the secondary spark path has failed. IgnitionMedium
- P0352 OBD-II code P0352 flags a fault in ignition coil B — either the primary drive circuit is bad or the secondary spark path has failed. IgnitionMedium
- P0400 OBD-II code P0400 flags an EGR flow fault — the PCM commanded EGR but doesn't see the expected change in engine load or flow feedback. EmissionsMedium
- P0401 Détection d'un débit insuffisant de la recirculation des gaz d'échappement (EGR) ÉmissionsMoyen
- P0402 OBD-II code P0402 flags excessive EGR flow — the EGR valve is admitting more exhaust than the PCM commanded, causing rough running and driveability issues. EmissionsMedium
- P0403 OBD-II code P0403 means the PCM has detected an electrical fault in the EGR control circuit — the EGR valve isn't responding to commands from the PCM. EmissionsMedium
- P0410 OBD-II code P0410 flags a general fault in the secondary air injection system — the PCM commanded air injection but doesn't see the expected O2 response at cold start. EmissionsLow
- P0411 OBD-II code P0411 means the secondary air injection pump isn't delivering the airflow the PCM commanded — cold-start emissions can't be cleaned up quickly. EmissionsLow
- P0420 OBD-II code P0420 means the bank 1 catalytic converter isn't reducing emissions enough — the downstream O2 sensor reads nearly identically to the upstream one. EmissionsMedium
- P0421 OBD-II code P0421 means the warm-up (close-coupled) catalyst on bank 1 has fallen below efficiency threshold during cold-start emissions monitoring. EmissionsMedium