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According to Repair Pal, Code P0446 indicates that there is an improper voltage drop in the EVAP Vent Valve circuit, which can be caused by either too little or too much electrical resistance.

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7y ago
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7y ago

That OBD II number is incomplete. It needs to have 5 digits and start with either a "P", "C", "B" or "U".

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Q: What does OBD II codes 446 mean?
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