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P0446 Diagnostic Trouble Code Discussion for October 2007

EVAP Vent System Performance


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Trouble Ticket Help Requests for DTC P0446
Help Request Posted
2003 Saab 9-3 Linear 2.0L MIL Lamp on VIN: YS3FB49S23
P0446: EVAP Canister Vent Control Valve. ... having some difficulty diagnosing. Initally the vehicle came in with an intermittent MIL light. The only code stored was P0446 EVAP Vent Control Valve Circuit. My Tech 2 does not have Saab software, so I am forced to use the Snap On scanner. I have no bi-d...
October 01, 2007
2001 Toyota Camry CE 2.2L MIL Lamp on VIN: 4T1BG22K31
P0446: EVAP Vent Control Solenoid Circuit Malfunction. camry with a code p0446, replaced vac valve by air cleaner and code still comes back, its intermittent. i only have the p0446 code and i am leaning toward replacing the chacoal canister w/valve, but i am wondering exactly which valves come with it and what abo...
October 03, 2007
2000 Chevrolet Astro 4.3L MIL Lamp on VIN: 1GCDM19W6Y
P0446: EVAP Vent System Performance. all codes set at same time vehicle will go days and run fine then codes set vehicle will not go over 50 mph never happened for us but freeze frame data shows tp voltage 0 checked tp sensor iat sensor evap vent all look good checked over wiring for short to gro...
October 11, 2007
2004 Chevrolet Silverado 2500 HD 6.0L MIL Lamp on VIN: 1GCHC29U84
P0446: EVAP Vent System Performance. ... light on for p0446. first time replaced vent valve due to clogged with dirt. Vehicle returned with same issue ( valve clogged with dirt) found tsb for vehicle driven in dusty enviroments. Relocated vent valve with updated part # per tsb. Vehicle returns ag...
October 22, 2007