P0430Catalyst System Efficiency Below Threshold (Bank 2)
Voici ce que signifie le code défaut P0430, pourquoi il apparaît et que faire à son sujet.
Système: Catalyst / emissions
Généralement sans danger sur de courtes distances, mais faites-le contrôler rapidement.
Ce que signifie P0430
Same as P0420 but for bank 2 (the cylinder bank that does not contain cylinder #1). The computer compares the oxygen sensors before and after the bank 2 catalytic converter and found it is no longer cleaning the exhaust efficiently. Usually the converter is worn out, though a bad sensor or exhaust leak can also be the cause.
Symptômes courants
- Check engine light on
- Often no change in how the car drives
- Possible rotten-egg (sulfur) smell or mild power loss
- Reduced fuel economy in some cases
- Will fail an emissions test
Causes courantes
Classées de la plus courante à la moins courante.
- 1Worn-out or failing catalytic converter (bank 2)
- 2Failed or lazy downstream O2 sensor
- 3Exhaust leak before or near the converter or sensors
- 4Engine running rich/lean or misfiring, damaging the converter
- 5Aftermarket or low-quality converter that doesn't meet spec
- 6Oil or coolant contamination of the converter
Que faire
You can usually drive short distances; this is an emissions code, not an urgent safety problem. Have it diagnosed before buying a converter, since a sensor fault, exhaust leak, or misfire can cause it. Fix any upstream engine issue first to avoid damaging a replacement converter.
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Questions fréquentes
Que signifie le code P0430 ?
Same as P0420 but for bank 2 (the cylinder bank that does not contain cylinder #1). The computer compares the oxygen sensors before and after the bank 2 catalytic converter and found it is no longer cleaning the exhaust efficiently. Usually the converter is worn out, though a bad sensor or exhaust leak can also be the cause.
Quelles sont les causes du code P0430 ?
Les causes les plus courantes sont : Worn-out or failing catalytic converter (bank 2), Failed or lazy downstream O2 sensor, Exhaust leak before or near the converter or sensors, Engine running rich/lean or misfiring, damaging the converter, Aftermarket or low-quality converter that doesn't meet spec, Oil or coolant contamination of the converter.
Peut-on rouler sans danger avec le code P0430 ?
Généralement sans danger sur de courtes distances, mais faites-le contrôler rapidement.
Comment corriger le code P0430 ?
You can usually drive short distances; this is an emissions code, not an urgent safety problem. Have it diagnosed before buying a converter, since a sensor fault, exhaust leak, or misfire can cause it. Fix any upstream engine issue first to avoid damaging a replacement converter.
Ce sont des informations générales pour vous aider à comprendre le code P0430, et non un substitut au diagnostic d’un mécanicien qualifié. Confirmez toujours la cause avant de remplacer des pièces.
Les définitions des codes suivent la liste OBD-II normalisée (SAE J2012). CarVinVin est indépendant et n’est affilié à aucun constructeur.