P0446
EVAP System Vent Control Circuit
P0446 is an OBD-II diagnostic trouble code meaning: EVAP System Vent Control Circuit. Common causes: evap vent valve malfunction, open or short circuit in wiring harness. Estimated repair cost: $56–167.
Symptoms
- Check Engine Light Is On
- The smell of gasoline in or around the car
- Increased fuel consumption
Causes
- EVAP vent valve malfunction
- Open or short circuit in wiring harness
- Problems with the ECU
- Clogged or damaged EVAP system lines
How to Fix
- Check the condition of the EVAP vent valve
- Inspect the wiring harness for damage
- Check the integrity of the EVAP system pipelines
- Scan the ECU for additional errors
- If necessary, replace faulty components
Related codes
Error P0446 by Vehicle Brand
FAQ
What does the P0446 code mean?
P0446 is an OBD-II diagnostic trouble code that indicates: EVAP System Vent Control Circuit
What causes a P0446 error code?
The most common causes of P0446 include: EVAP vent valve malfunction; Open or short circuit in wiring harness; Problems with the ECU; Clogged or damaged EVAP system lines.
How do I fix a P0446 diagnostic trouble code?
To fix P0446: Check the condition of the EVAP vent valve. Inspect the wiring harness for damage. Check the integrity of the EVAP system pipelines. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P0446?
Limited driving only, diagnose soon
How much does it cost to fix P0446?
The estimated repair cost for P0446 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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