p0446
Moderate
Lexus · SUVs
Evaporative Emission Control System - Vent Control Circuit
Quick Answer
Error code P0446 on your Lexus SUVs means: Evaporative Emission Control System - Vent Control Circuit. This is usually fixable — see the step-by-step guide below.
Affected Models
Likely Causes
How to Fix It
1
Scan OBD-II for specific fault information
2
Check vent solenoid electrical connector
3
Test vent control solenoid with ohmmeter
4
Inspect vent line for blockage
5
Check for power and ground at solenoid
Pro Tip
This fix requires some technical knowledge. If you're unsure about any step, consider contacting support or a qualified technician.
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