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P0446
2016 Chevrolet Equinox
Chevrolet
Severity
Low
Safe to Drive
Yes
Est. Time
1hr
Difficulty
Easy
SYMPTOM
Check engine light, no other symptoms
Why This Happens
A stuck or clogged EVAP vent valve restricts airflow needed for the system to properly test itself, triggering this code.
VERIFIED FIX:
EVAP vent control valve cleaned and tested, valve replaced due to continued sticking
How It Was Diagnosed
A stuck or clogged EVAP vent valve restricts airflow needed for the system to properly test itself, triggering this code.
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