2005 Infiniti P0446: What It Means & Is It Safe to Drive?
P0446 on the 2005 Infiniti: Evaporative Emission System Vent Control Circuit. Here's what it means, what usually causes it, what repairs typically cost, and whether it's safe to keep driving.
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What this code means
The PCM has detected a problem with the EVAP vent control circuit, often caused by a stuck or failed vent valve.
Common causes on the 2005 Infiniti
- Failed EVAP vent solenoid
- Corroded wiring or connector at vent valve
- Blocked vent due to dust, rust, or spider webs
Symptoms
- Check Engine Light
- Possible difficulty filling fuel tank (nozzle keeps clicking off)
Typical fixes
- Replace EVAP vent valve/solenoid
- Clean or clear vent and charcoal canister area
- Repair wiring
Repair cost range
For a 2005 Infiniti, repairs for P0446 typically fall between $150 and $450, depending on the root cause and labor rates in your area.
Known issues on Infiniti
Infiniti EVAP vent valve circuit—the vent valve mounted near the charcoal canister commonly fails from moisture exposure. The valve is accessible from underneath; confirm wiring continuity before replacing the valve.
Most commonly affected models
G35 2003–2007G37 2008–2013FX35 2003–2008