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P0446 Diagnostic Trouble Code Discussion for February 2011

EVAP Vent System Performance

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Trouble Ticket Help Requests for DTC P0446
Help Request Posted
2004 Cadillac CTS 3.6L Excessive Emissions VIN: 1G6DM57734
P0446: EVAP Vent Solenoid Valve Control System. this vechicle after fill up will set a p0446 and start rough like its flooded. checked the canister and vent valve no sign of raw fuel but replaced both. smoked gas tank at cap i have flow though the gas vent line (the big one on the canister) and though the p...
February 15, 2011