P0354 means the ECU saw an electrical fault in the primary or secondary circuit driving ignition coil #4. Cylinder 4 isn't getting reliable spark, so expect a misfire and a flashing CEL under load.
Scanne ta voiture en 60 secondes environ : vois si P0354 est vraiment présent, à quel point c'est urgent et ce que la réparation devrait coûter.
Telecharger SkanyxP0354 means the ECU saw an electrical fault in the primary or secondary circuit driving ignition coil #4. Cylinder 4 isn't getting reliable spark, so expect a misfire and a flashing CEL under load.
P0354 est un code defaut lie a allumage, classe en gravite moderate. Lorsque le calculateur de ton vehicule detecte cette condition, il enregistre P0354 et allume le voyant moteur.
Si ton vehicule a declenche P0354, tu peux remarquer un ou plusieurs de ces symptomes :
Voici les causes les plus courantes de P0354 :
Non, regle ca immediatement. You can limp home, but unburned fuel dumps into the exhaust and cooks the catalytic converter. Fix within a day or two, not weeks.
Suis ces etapes pour identifier la cause profonde de P0354 :
Les couts de reparation de P0354 varient selon la cause profonde et ton vehicule. Voici des estimations courantes :
Prix estimes au March 2026. Les couts varient selon la region, le vehicule et le garage.
P0354 se comporte differemment selon ton vehicule. Selectionne ta voiture ci-dessous pour des causes propres au modele, les problemes connus et des estimations de couts ajustees :
2004-2014
5.4L 3V Triton is notorious for coil-on-plug failure. Boots crack, moisture gets in, and the two-piece spark plugs (TSB 08-1-9) often snap off in the head during removal. Use Motorcraft coils and Champion/Motorcraft plugs with anti-seize.
Couts estimes pour les proprietaires de Ford F-150ajuste a la hausse par rapport a la moyenne en raison du prix des pieces specifiques a Ford
Prix estimes au March 2026. Les couts varient selon la region, le vehicule et le garage.
2006-2016
1.4 TSI (CAVD/CTHD) and 2.0 TFSI (BPY, CCTA) went through several coil revisions. VW part 06H905115 has superseded through B, C, E, F, and later suffixes. Fit the latest revision as a set, not just cylinder 4.
Couts estimes pour les proprietaires de VW Golfajuste a la hausse par rapport a la moyenne en raison du prix des pieces specifiques a Volkswagen
Prix estimes au March 2026. Les couts varient selon la region, le vehicule et le garage.
2007-2015
N54 (335i) and N55 (335i/435i) hammer coils when the plugs are past their 60,000 km interval. Stick with OEM Bosch or Delphi coils. On the N54, also rule out cracked charge pipes and injector index issues before condemning the coil.
Couts estimes pour les proprietaires de BMW 3-Seriesajuste a la hausse par rapport a la moyenne en raison du prix des pieces specifiques a BMW
Prix estimes au March 2026. Les couts varient selon la region, le vehicule et le garage.
2002-2018
2AZ-FE and 2AR-FE rarely lose coils. When P0354 appears on a Camry it's usually plugs left past 160,000 km or oil in the plug tubes from a leaking valve cover gasket. Denso FK20HR11 iridium is the correct plug for most 2AR-FE builds.
Couts estimes pour les proprietaires de Toyota Camryajuste a la baisse par rapport a la moyenne en raison du prix des pieces specifiques a Toyota
Prix estimes au March 2026. Les couts varient selon la region, le vehicule et le garage.
2006-2015
R18A1 (1.8L) and K24Z7 (Si 2.4L) rarely fail coils outright. Check the coil sub-harness where it runs along the valve cover, it chafes on the cover edge and cuts the trigger wire. Also inspect the plug tube seals in the valve cover gasket.
Couts estimes pour les proprietaires de Honda Civicajuste a la baisse par rapport a la moyenne en raison du prix des pieces specifiques a Honda
Prix estimes au March 2026. Les couts varient selon la region, le vehicule et le garage.
Ces codes apparaissent souvent avec P0354 ou indiquent des problemes connexes :
Coil D is cylinder 4 on virtually every application. On inline engines count from the front (timing) end. On V engines check the firing order and bank layout in the service data, since cylinder numbering isn't the same across manufacturers.
Yes, and it's the fastest test on the car. Move coil 4 to another cylinder, clear the code, and drive. If the code jumps to the new cylinder, the coil is bad. If P0354 stays, look at the plug, connector, or wiring.
Yes if you keep driving on it. Raw fuel entering a hot cat overheats the substrate and melts it. A €60 coil now beats a €900 catalyst later, which is why the ECU flashes the CEL during an active misfire.
Usually one of three things: the replacement coil is defective out of the box (common with cheap aftermarket), the spark plug is fouled or gapped wrong, or there's a broken wire or bad pin in the connector that's still cutting the trigger signal.
No. A dead injector on cylinder 4 typically sets P0204 or a cylinder-4 misfire (P0304). P0354 is strictly an ignition primary or secondary circuit electrical fault, not a combustion or fuel fault.
A flashing check engine light is not the same as a steady one. It almost always means an active misfire that can wreck your catalytic converter in minutes.
An unfamiliar light just appeared on your dashboard and you have no idea what it means. Here is how to read every symbol by colour and which ones mean stop now.
Ta voiture a enregistré P0354. Skanyx le lit avec n'importe quel adaptateur OBD2 Bluetooth standard, te dit si tu peux continuer à rouler en sécurité et affiche la fourchette de réparation de €48-€1450 pour que tu connaisses le montant avant qu'un garage ne te fasse un devis.
Telecharger Skanyx