2003 H2 Emission Codes

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2003 H2 Emission Codes

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2003 H2 Emission Codes - 6/13/2007 7:25:10 PM

Hombre

Posts: 1
Joined: 6/13/2007
Status: offline

My H2 has recently registered an emission code, P0446 Evaporative Emission Control System Vent Control Circuit Malfuction. I haven't purchased the manuals to determine what the problem is but was wondering if anyone had run across this problem. Any info would be greatly appreciated.

Thanks.......Hombre

Post #: 1

RE: 2003 H2 Emission Codes - 6/14/2007 1:03:06 AM

shortbus

Posts: 3602
Joined: 6/27/2005
Status: offline

check your gas tank filler cap. this sets if the fuel tank vacuum doesn't return to close to 0 within a calibrated time (not sure what that time is though). if the condition is temporary, it should clear itself after 3 ignition cycles. otherwise, could be a slew of things wrong, but they should all be covered under warranty for a 5 year period since it's part of the emission control system.

(in reply to Hombre)

Post #: 2

RE: 2003 H2 Emission Codes - 6/14/2007 3:17:20 AM

alpha4wd

Posts: 16
Joined: 3/26/2007
Status: offline

they had alot of problems with the vent valve

(in reply to shortbus)

Post #: 3