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P0446 Diagnostic Trouble Code Discussion for April 2007

EVAP Vent System Performance


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Trouble Ticket Help Requests for DTC P0446
Help Request Posted
2000 Porsche Boxster Roadster 3.2L gas fill slow VIN: WPOCA2984Y
P0446: evap shutoff valve. The porsche boxter we have came in for two problems check engine light po446 evap shut off valve which he is not worried about and very slow when filling with gas at the pump i found a repair on another site about tubes at the bottom of the filler neck in the ...
April 11, 2007
1999 Pontiac Grand Prix SE 3.1L MIL Lamp on VIN: 1G2WJ52M8X
P0446: EVAP Canister Purge Vent Blocked. ... a evap system that is throwing a p0446 code (vent blocked). When car first came in we looked it over for pinched lines or hose and the only thing we found was a vent solenoid that was leaking vacuum past it so we replaced it, cleared codes , and told custo...
April 18, 2007
2000 Chevrolet Silverado 1500 5.3L Misfire, MIL Lamp on VIN: 1GCEK19T7Y
P0446: EVAP Vent System Performance. yesterday this truck had a hard miss mainly on #5,7 cylinder and they were getting spark I switched injectors around and no change. did compression check and 150psi. check back pressure on exhaust and under .5 psi. fuel pressure regulator is not leaking. but f...
April 20, 2007
1999 Toyota Corolla CE 1.8L MIL Lamp on VIN: 2T1BR12E1X
P0446: EVAP Vent Control Solenoid Circuit Malfunction. ... corolla with a failed emission test. MIL on dtc p0446. I have checked the vacum lines and all is well. My scaner does not perform the tests that alldata points out. However I activated the evap solonoid manually and it seems OK. Also activated the solonoid...
April 26, 2007
2000 Volvo S70 2.4L MIL Lamp on VIN: YV1LS61J7Y
P0446: Evap canisster shut off valve. ... Have this S70 with CE light on with 6 codes in system! cleared codes car cranks over but will not turn on til CE light comes back on, car will run normal after it's on! Listed all codes that were in system, need def. for P1671 if anyone can get that to me ...
April 26, 2007
2003 Chevrolet S10 4.3L MIL Lamp on VIN: 1GCDT19X03
P0446: EVAP Vent System Performance. Got a question about how exactly the vent valve is supposed to act when activated. When I command it on(closed) with my scan tool it does not activate until I command it back off again and then it turns on for about 10 seconds. After the 10 seconds passes it s...
April 27, 2007
2003 Chevrolet S10 4.3L MIL Lamp on VIN: 1GCDT19X03
P0446: EVAP Vent System Performance. Got a question about how exactly the vent valve is supposed to act when activated. When I command it on(closed) with my scan tool it does not activate until I command it back off again and then it turns on for about 10 seconds. After the 10 seconds passes it s...
April 28, 2007
2000 Porsche Boxster Roadster 3.2L gas fill slow VIN: WPOCA2984Y
P0446: evap shutoff valve. The porsche boxter we have came in for two problems check engine light po446 evap shut off valve which he is not worried about and very slow when filling with gas at the pump i found a repair on another site about tubes at the bottom of the filler neck in the ...
April 11, 2007
1999 Pontiac Grand Prix SE 3.1L MIL Lamp on VIN: 1G2WJ52M8X
P0446: EVAP Canister Purge Vent Blocked. ... a evap system that is throwing a p0446 code (vent blocked). When car first came in we looked it over for pinched lines or hose and the only thing we found was a vent solenoid that was leaking vacuum past it so we replaced it, cleared codes , and told custo...
April 18, 2007
2000 Chevrolet Silverado 1500 5.3L Misfire, MIL Lamp on VIN: 1GCEK19T7Y
P0446: EVAP Vent System Performance. yesterday this truck had a hard miss mainly on #5,7 cylinder and they were getting spark I switched injectors around and no change. did compression check and 150psi. check back pressure on exhaust and under .5 psi. fuel pressure regulator is not leaking. but f...
April 20, 2007
1999 Toyota Corolla CE 1.8L MIL Lamp on VIN: 2T1BR12E1X
P0446: EVAP Vent Control Solenoid Circuit Malfunction. ... corolla with a failed emission test. MIL on dtc p0446. I have checked the vacum lines and all is well. My scaner does not perform the tests that alldata points out. However I activated the evap solonoid manually and it seems OK. Also activated the solonoid...
April 26, 2007
2000 Volvo S70 2.4L MIL Lamp on VIN: YV1LS61J7Y
P0446: Evap canisster shut off valve. ... Have this S70 with CE light on with 6 codes in system! cleared codes car cranks over but will not turn on til CE light comes back on, car will run normal after it's on! Listed all codes that were in system, need def. for P1671 if anyone can get that to me ...
April 26, 2007
2003 Chevrolet S10 4.3L MIL Lamp on VIN: 1GCDT19X03
P0446: EVAP Vent System Performance. Got a question about how exactly the vent valve is supposed to act when activated. When I command it on(closed) with my scan tool it does not activate until I command it back off again and then it turns on for about 10 seconds. After the 10 seconds passes it s...
April 27, 2007
2003 Chevrolet S10 4.3L MIL Lamp on VIN: 1GCDT19X03
P0446: EVAP Vent System Performance. Got a question about how exactly the vent valve is supposed to act when activated. When I command it on(closed) with my scan tool it does not activate until I command it back off again and then it turns on for about 10 seconds. After the 10 seconds passes it s...
April 28, 2007