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Re: '05 suburban PO446 evap code after fuel pump?
Posted to Technical Discussion Forum on 10/9/2007 1 Reply

Stephen: PO446: Evaporative Emission Control Vent Control CIRCUIT Malfunction. That definition, taken from a State of California OBD 11 BAR textbook, suggests a circuit/wiring problem, not a flow problem. David. Login to read more.

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