P0446
Evaporative Emission Control System Vent Control Circuit Malfunction
Generic code
Auxiliary Emissions Control
Low severity
Hard repair
Free on OBD DashX
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What P0446 means
- The fault code P0446 indicates that there is a problem with the vent control circuit that is used to regulate the flow of vapors in the evaporative emission control system. This can cause issues with emissions and potentially harm the environment.
Possible symptoms
- Illuminated check engine light
- Smell of fuel from the vehicle
- Decreased fuel efficiency
- Failed emissions test
Possible causes
- Faulty vent control valve
- Blocked or clogged ventilation hoses
- Loose or corroded electrical connections
- Failed engine control module (ECM)
Related parts
- Evaporative Emission (EVAP) System: The EVAP system prevents petrol vapors from escaping into the atmosphere from the fuel tank and fuel system. Problems in this car's flow valve will lead to fuel loss
Possible solutions
- Replace the vent control valve
- Check and clear any blockages in the ventilation hoses
- Tighten or clean any loose or corroded electrical connections
- Replace the engine control module (ECM) if necessary
Free on OBD DashX
P0446 on OBD DashX
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