P0446Severity: Low
P0446 – EVAP Vent Control Circuit
A fault in the EVAP vent valve/circuit.
What it means
The EVAP system's vent valve or circuit isn't working correctly. It's usually a valve failure or debris clogging.
Symptoms
- Check-engine light
- Occasional hard refueling
- No obvious driving effect
Common causes
- Faulty vent valve
- Wiring/connector issue
- Debris clogging
- Canister problem
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Frequently asked questions
What does trouble code P0446 mean?
P0446 – EVAP Vent Control Circuit. The EVAP system's vent valve or circuit isn't working correctly. It's usually a valve failure or debris clogging.
Can I drive with a P0446 code?
It's usually not urgent, but finding and fixing the cause matters for emissions and fuel economy.