DTC P0446 — EVAP Vent Control Circuit
P0446 indicates: EVAP Vent Control Circuit.
Diagnostic summary
P0446
What it means
EVAP Vent Control Circuit
Can you drive?
✅ Safe to drive
Urgency
Low 3/10
Typical price
$30 – $300
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Updated Jun 4, 2026 Seen on Powertrain
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ℹ️ What does it mean?
EVAP Vent Control Circuit
🔍 Symptoms
- • Check Engine Light on
- • Reduced engine performance
- • Increased fuel consumption
- • Unusual engine behavior
⚠️ Possible Causes
- ⚠ Faulty vent valve
- ⚠ Blocked vent line
- ⚠ Wiring issue
- ⚠ Charcoal canister blocked
🚗 Can I drive with this code?
Safe to drive
Generally safe to drive. Fix at your convenience.
🔧 How to Diagnose
- 1 Read DTCs with OBD-II scanner
- 2 Check freeze frame data
- 3 Inspect related components
- 4 Clear codes and test drive
🛠️ How to Fix
- 1 Replace vent valve
- 2 Clear vent line
- 3 Repair wiring
- 4 Replace canister
💰 Estimated Repair Cost
Repair cost by car / region
Early rough estimate. Accuracy improves as more real repair stories are added.
DIY / parts$11 – $195
Mechanic / labor$14 – $225
Repair range$30 – $300
❓ FAQ
What does P0446 mean?
EVAP Vent Control Circuit
How serious is P0446?
Severity: low. Generally safe to drive. Fix at your convenience.
How much does it cost to fix P0446?
Estimated repair cost: $30–$300 depending on vehicle and region.
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