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JR
JR 8/9/2011
2000 Lexus GS300 Base 6Cyl3.0L - Engine
I am getting p0446 on check engine light. what does this mean
check engine light is on
2 Answers
  • Jimm
    Jimm 8/9/2011
    P0446 = Evaporative Emission Control System Vent Control Circuit Malfunction

    A code P0446 could mean one or more of the following has happened:

    Faulty vent valve
    Open, short or excessive resistance on Vent valve control circuit
    Blockage of vent valve
    Bad PCM

    Possible Solutions:
    With a P0446 OBD-II trouble code, here are some things to try:

    Replace Vent valve
    Repair open, short, or resistance problem in control circuit
    Repair open, or short, or resistance problem in power circuit
    Replace PCM
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  • yboy82
    yboy82 8/9/2011
    P0446 means Evaporative Emission Control System Vent Control Circuit Malfunction. This trouble code is triggered when the PCM senses an irregularity of the anticipated voltage or an open in the purge control valve circuit.

    Here are the possible cause of P0446

    •Short or open in the vent valve control circuit
    •Clogged to vent valve
    •Defective vent valve
    •Defective PCM
    Reply
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