2023 Lexus P0446: What It Means & Is It Safe to Drive?
P0446 on the 2023 Lexus: 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 2023 Lexus
- 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 2023 Lexus, repairs for P0446 typically fall between $150 and $450, depending on the root cause and labor rates in your area.
Known issues on Lexus
Lexus P0446 EVAP vent valve fault follows the same Toyota VSV diagnosis. The canister vent valve is inexpensive and typically the failing component. Test it with scan tool actuation before replacing.
Most commonly affected models
RX300/330 2000–2006ES300/330 2000–2006GX470 2003–2009