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P0446 Diagnostic Trouble Code Discussion for September 2008

EVAP Vent System Performance

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Trouble Ticket Help Requests for DTC P0446
Help Request Posted
1998 Chevrolet Malibu 3.1L MIL Lamp on VIN: 1G1ND52M4W
P0446: EVAP Canister Purge Vent Blocked. ... This malibu came in with a code p0446. We found the vent solenoid to be faulty, so we put a new one in. The code came right back, so we followed the gm trouble tree again, and thought maybe the canister was bad. We took the canister out for inspection, it...
September 03, 2008
2000 Chevrolet Prizm 1.8L MIL Lamp on VIN: 1Y1SK5285Y
P0446: evap system. we have tested through the diag charts we tested the cannister purge valve, the canister vent valve & wiring to all the testing process wants me to preasurize the tank I have no way to do this is there any other way?
September 17, 2008
2002 Isuzu Rodeo LS 3.2L MIL Lamp on VIN: 4S2DM58W52
P0446: EVAP Vent Control System Performance. code P0446, We already replaced the vent conroll valve assembly but check engine light did come back on.
September 29, 2008
2000 Pontiac Montana 3.4L No Start, Cuts out, Stall, Misfire VIN: 1GMDX03EOY
P0446: EVAP Vent System Performance. ... little long.started late august custumer stated van just cut out started and died a cupple times then seem ok.she then brought van to shop i test drove after it set maybe an hour van bucked once quickly and drove fine got back to shop only codes where the ...
September 30, 2008