p0446
Moderate
Lexus · Sedans
Evaporative Emission System Ventilation Control Circuit
Quick Answer
Error code P0446 on your Lexus Sedans means: Evaporative Emission System Ventilation Control Circuit. This is usually fixable — see the step-by-step guide below.
Affected Models
Likely Causes
How to Fix It
1
Check vent valve electrical connector
2
Test vent solenoid with multimeter
3
Inspect vent filter for blockage
4
Check wiring and connectors
5
Replace vent solenoid if faulty
Pro Tip
This fix requires some technical knowledge. If you're unsure about any step, consider contacting support or a qualified technician.
Parts You May Need
Vent solenoid valve
Vent filter
Electrical connectors
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