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 è un codice diagnostico di guasto relativo a sistema evap, classificato con gravità low. Quando la centralina (ECU) del tuo veicolo rileva questa condizione, memorizza P0447 e accende la spia motore.
Se il tuo veicolo ha attivato P0447, potresti notare uno o più di questi sintomi:
Ecco le cause più comuni di P0447, ordinate in base alla probabilità che siano la causa del problema:
In genere sì, per brevi tragitti. 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.
Segui questi passaggi per individuare la causa principale di P0447:
I costi di riparazione di P0447 variano a seconda della causa principale e del tuo veicolo. Ecco le stime tipiche:
Prezzi stimati al March 2026. I costi variano in base alla regione, al veicolo e all'officina.
P0447 si comporta in modo diverso a seconda del tuo veicolo. Seleziona la tua auto qui sotto per cause specifiche del modello, problemi noti e stime dei costi adeguate:
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.
Costi stimati per i proprietari di BMW 3 Seriesadeguato al rialzo rispetto alla media a causa dei prezzi dei ricambi specifici BMW
Prezzi stimati al March 2026. I costi variano in base alla regione, al veicolo e all'officina.
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.
Costi stimati per i proprietari di Volkswagen Golfadeguato al rialzo rispetto alla media a causa dei prezzi dei ricambi specifici Volkswagen
Prezzi stimati al March 2026. I costi variano in base alla regione, al veicolo e all'officina.
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.
Costi stimati per i proprietari di Audi A4adeguato al rialzo rispetto alla media a causa dei prezzi dei ricambi specifici Audi
Prezzi stimati al March 2026. I costi variano in base alla regione, al veicolo e all'officina.
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.
Costi stimati per i proprietari di Ford Focusadeguato al ribasso rispetto alla media a causa dei prezzi dei ricambi specifici Ford
Prezzi stimati al March 2026. I costi variano in base alla regione, al veicolo e all'officina.
Questi codici compaiono spesso insieme a P0447 o indicano problemi correlati:
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.
Collega un adattatore OBD2 Bluetooth standard, esegui la scansione dei codici e ottieni una diagnosi basata sull'IA con livelli di gravità e stime dei costi di riparazione.
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