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P0446 Diagnostic Trouble Code Discussion for May 2007

EVAP Vent System Performance

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Trouble Ticket Help Requests for DTC P0446
Help Request Posted
1998 Chevrolet Tahoe 5.7L MIL Lamp on VIN: 3GNEK18R1W
P0446: EVAP Vent System Performance. Hi guys The customer is a retired mechanic. After he replaced the canister purge valve, one of the hoses at the canister and checked the lines he came to me. I pulled code PO446, and new he was on the right track. I think he may have a bad fuel vapor pressure...
May 20, 2007
1999 Pontiac Bonneville SSE 3.8L MIL Lamp on VIN: 1G2HZ52K9X
P0446: EVAP Emission Vent System Performance. Hi guys have a pontiac that sets a vent performance code.as soon as the customer takes it it sets.Last week we put in a new vent valve.313 miles later its back.I just ran the in bay service bay test and it passes.looking at the fail record its failed once and ...
May 30, 2007
1999 Toyota Camry LE 2.2L Excessive Emissions, MIL Lamp on VIN: JT2BG22K5X
P0446: EVAP Vent Control Solenoid Circuit Malfunction. The custoner states some time after the car accident repairs the ses light came on and stays on. She took car back to bodyshop. They said there work was done properly and the damage was not into the filler neck, tank or the undercarrage. Owner takes car to ano...
May 31, 2007