EVAP System Vent Control Circuit Malfunction on BMW
BMW
Verified1 source
1 source
- Official data (NHTSA)official_feed
What P0446 means
Safe to drive short-term
The EVAP vent valve/solenoid control circuit is malfunctioning.
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General information, not a diagnosis or repair instruction. Always confirm with a qualified mechanic for your specific vehicle.
Common causes
- EVAP System Vent Control Circuit Malfunction
What to check first
- Test vent valve operation
- Inspect wiring to the valve
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