P0446

2017-10-10

Description:

  • 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

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