2003 H2 Emission Codes (Full Version)

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2003 H2 Emission Codes

  

Hombre -> 2003 H2 Emission Codes (6/13/2007 7:25:10 PM)

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

  
shortbus -> RE: 2003 H2 Emission Codes (6/14/2007 1:03:06 AM)

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.

alpha4wd -> RE: 2003 H2 Emission Codes (6/14/2007 3:17:20 AM)

they had alot of problems with the vent valve

  

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