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Jan Andersson
Jan Andersson, ASE Master Tech
Category: Car
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Experience:  20 years of automotive repair & modification, USA, Asian, Euro, old & new cars. Porsche technician.
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Error codes 2005 scion xB P0441, P0442, P0446

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error codes 2005 scion xB P0441, P0442, P0446



Here are the code descriptions


P0441 = evap emission control purge fault

P0442 = evap emission control leak

P0446 = evap emission control vent circuit malfunction


I would first inspect all vacuum hoses in the engine bay very closely, for loose hose ends and cracks or dryrotting. Check the vac and wiring connections by the air filter box especially. Many shops can perform a Smoke Machine test, where they feed harmless smoke into the vacuum system and any leaks would be easier to spot, when you can see the smoke escaping.


Oh and when you fill up the tank, dont' overfill it. Stop at the first click of the pump gun. Overfilling may interfere with the tank vapor collection system (which is reporting a problem in your case).

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