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P0446 Diagnostic Trouble Code Discussion for May 2019

EVAP Vent System Performance


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Trouble Ticket Help Requests for DTC P0446
Help Request Posted
2006 Buick Rendezvous CXL 3.5L MIL Lamp on VIN: 3G5DA03L66
P0446: EVAP Vent System Performance. this vehicle has been here three times for this same code. it seems to come on around 3000 to 5000 miles of driving.canister vent solenoid and purge valve have been replaced. no leaks noted and passes evap system service bay test. these are older people an...
May 10, 2019