P2446 low
EVAP Emission System Vent Control Circuit/Open
Can I Drive?
Yes, But Fix Soon
DIY Difficulty
moderate
Estimated Cost
$80 - $300 (parts and labor)
What does P2446 mean?
The P2446 code means the vehicle's onboard diagnostic system has detected: EVAP Emission System Vent Control Circuit/Open. This is a low severity code.
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Common Symptoms
- Check Engine Light on
- Fuel tank may not vent properly
- Difficulty refueling
- Fuel odor from vehicle
- Failed emissions test
Probable Causes (Ranked by Likelihood)
- Failed EVAP vent solenoid valve Very High
- Vent solenoid filter clogged with debris High
- Wiring damage to vent solenoid Moderate
- ECM vent solenoid driver fault Low
Step-by-Step Diagnostic Procedure
-
Test EVAP vent solenoid with scan tool bidirectional control
-
Inspect vent solenoid filter for debris
-
Measure vent solenoid resistance
-
Check wiring and connector at vent solenoid
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Frequently Asked Questions
What does P2446 mean?
P2446 indicates: EVAP Emission System Vent Control Circuit/Open. The ECM detected an issue that needs diagnosis and repair.
Is P2446 urgent?
EVAP codes should be repaired but are not usually urgent unless you have an upcoming emissions test.
What should I check first?
Start with a visual inspection of the sensor wiring and connector. Use a scan tool to read live data. For DPF codes, check soot loading level. For EVAP codes, check the gas cap first.