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P0446 Diagnostic Trouble Code Discussion for September 2011

EVAP Vent System Performance


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Trouble Ticket Help Requests for DTC P0446
Help Request Posted
2005 GMC Sierra 1500 5.3L MIL Lamp on VIN: 132FDOI1CD
P0446: EVAP Vent System Performance. truck keeps throwing PO446 code replaced vent solenoid and carbon canister as both were full of dirt and would not close solenoid has been back twice now for same code we can hear click (open/close) with scanner vent should be working Thanks for your help we d...
September 19, 2011
2005 GMC Sierra 1500 5.3L MIL Lamp on VIN: 132FDOI1CD
P0446: EVAP Vent System Performance. truck keeps throwing PO446 code replaced vent solenoid and carbon canister as both were full of dirt and would not close solenoid has been back twice now for same code we can hear click (open/close) with scanner vent should be working Thanks for your help we d...
September 21, 2011
2003 Chevrolet Tahoe Z71 5.3L MIL Lamp on VIN: 1GNEK13T43
P0446: EVAP Vent System Performance. ... gotten a continuous P0446 code since I purchased the truck in 2009. I have run all the test and followed all the diagrams. Have checked all the lines for holes, blockage and kinks. Everything has paned out just fine. I have replaced both vent vale and cani...
September 28, 2011
2005 GMC Sierra 1500 5.3L MIL Lamp on VIN: 132FDOI1CD
P0446: EVAP Vent System Performance. truck keeps throwing PO446 code replaced vent solenoid and carbon canister as both were full of dirt and would not close solenoid has been back twice now for same code we can hear click (open/close) with scanner vent should be working Thanks for your help we d...
September 19, 2011
2005 GMC Sierra 1500 5.3L MIL Lamp on VIN: 132FDOI1CD
P0446: EVAP Vent System Performance. truck keeps throwing PO446 code replaced vent solenoid and carbon canister as both were full of dirt and would not close solenoid has been back twice now for same code we can hear click (open/close) with scanner vent should be working Thanks for your help we d...
September 21, 2011
2003 Chevrolet Tahoe Z71 5.3L MIL Lamp on VIN: 1GNEK13T43
P0446: EVAP Vent System Performance. ... gotten a continuous P0446 code since I purchased the truck in 2009. I have run all the test and followed all the diagrams. Have checked all the lines for holes, blockage and kinks. Everything has paned out just fine. I have replaced both vent vale and cani...
September 28, 2011