2021 Mitsubishi P0446: What It Means & Is It Safe to Drive?
P0446 on the 2021 Mitsubishi: 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 2021 Mitsubishi
- 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 2021 Mitsubishi, repairs for P0446 typically fall between $150 and $450, depending on the root cause and labor rates in your area.
Known issues on Mitsubishi
Mitsubishi P0446 EVAP vent valve fault is typically a failed canister vent solenoid. Test the solenoid electrically before replacing. On Outlander, the vent valve connector can corrode from underbody moisture exposure—inspect the connector condition first.
Most commonly affected models
Outlander 2004–2012Galant 2004–2009Eclipse 2006–2012