P0447 means the ECU detected an open electrical circuit on the EVAP vent control valve. The vent valve seals the charcoal canister during EVAP system testing. An open circuit usually points to a broken wire, a corroded connector, or a failed solenoid coil inside the valve itself.
P0447 means the ECU detected an open electrical circuit on the EVAP vent control valve. The vent valve seals the charcoal canister during EVAP system testing. An open circuit usually points to a broken wire, a corroded connector, or a failed solenoid coil inside the valve itself.
P0447 est un code defaut lie a systeme evap, classe en gravite low. Lorsque le calculateur de ton vehicule detecte cette condition, il enregistre P0447 et allume le voyant moteur.
Si ton vehicule a declenche P0447, tu peux remarquer un ou plusieurs de ces symptomes :
Voici les causes les plus courantes de P0447, classees selon la probabilite qu'elles soient en cause :
En general oui, pour des trajets courts. P0447 is a circuit fault on the EVAP vent valve and does not affect engine performance or safety. You can drive normally, but the check engine light will fail any EU emissions inspection. Repair before your next test.
Suis ces etapes pour identifier la cause profonde de P0447 :
Les couts de reparation de P0447 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.
P0447 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 :
2005–2024
BMW E90/F30 vehicles use a leak detection pump assembly that combines the vent valve and a pump motor. When the LDP fails it often sets P0447 alongside other EVAP codes. The unit is mounted at the rear of the vehicle and is exposed to road salt. A full LDP assembly is significantly more expensive than a standalone vent valve.
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.
2005–2024
On the Mk5 and Mk6 Golf, the vent valve is integrated into the charcoal canister near the rear axle. The wiring connector is a common failure point because it sits low on the chassis and collects moisture. Test the harness before condemning the canister.
Couts estimes pour les proprietaires de Volkswagen 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.
2005–2024
The B7 and B8 A4 share EVAP components with the VW Golf. The N115 vent valve on the canister is the typical failure for P0447. Audi part availability is good through ATU, Autodoc.de, and kfzteile24.de, with aftermarket valves around 40 to 60 EUR.
Couts estimes pour les proprietaires de Audi A4ajuste a la hausse par rapport a la moyenne en raison du prix des pieces specifiques a Audi
Prix estimes au March 2026. Les couts varient selon la region, le vehicule et le garage.
2005–2024
On the Focus Mk2 and Mk3, the vent valve (Ford calls it the canister vent solenoid) is mounted on top of the canister near the rear of the vehicle. The connector pins corrode after several winters of road salt exposure. Cleaning the connector and applying dielectric grease often resolves intermittent P0447 codes.
Couts estimes pour les proprietaires de Ford Focusajuste a la baisse 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.
Ces codes apparaissent souvent avec P0447 ou indiquent des problemes connexes :
Yes. The check engine light will cause an automatic fail at any EU vehicle inspection (TÜV, ITV, TA, SKP). The vent valve is a monitored component, so the ECU will not run the EVAP readiness test until the circuit is fixed.
Yes, the code does not affect engine performance, fuel economy, or safety. The only practical impact is the check engine light and the failed emissions test. Repair within a few weeks to avoid related EVAP codes piling up.
About 60 to 70 percent of P0447 cases are a failed solenoid coil inside the vent valve itself. The remaining cases are wiring damage, especially on vehicles where the valve is mounted underbody and exposed to road salt and debris. Always measure resistance before replacing the valve.
A new vent valve runs 40 to 150 EUR in parts plus 30 to 80 EUR labour, for a total of 70 to 230 EUR. Wiring repairs are typically 50 to 160 EUR. If the canister-mounted valve is integrated and not separately serviceable, expect 180 to 600 EUR for the full canister assembly.
Branche un adaptateur OBD2 Bluetooth standard, scanne les codes et obtiens un diagnostic par IA avec niveaux de gravite et estimations des couts de reparation.
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