2002 Saturn SL2 trouble code PO446

Tiny
JUNKYARD
  • MEMBER
  • 2002 SATURN
My car is a 2002 SaturnSL2 with 25000 miles on it,
Its hardly broke in. Engine trouble light came on, had code read PO446 ( Evaporative Emission Control System Vent Control Circuit malfunction) About two weeks prior to this when I went to gas up I noticed the gas cap was just lying loose inside the gas cover. I thiught this may have happened when my wife gassed up. I replaced the cap reset the cars computer but the next day the code was back. Help
Sunday, August 20th, 2006 AT 2:39 PM

1 Reply

Tiny
MIKEYBDMAN
  • MECHANIC
  • 623 POSTS
Well, without having the proper scan tool, it is just a guess as to the problem. It could be a Fuel tank pressure sensor, a EVAP vent solenoid, or some kind of obstruction.
Check the following for causes of a blocked vent system:

EVAP vent solenoid blocked or stuck valve
Vent hose plugged, kinked or pinched
EVAP canister restricted
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Sunday, August 20th, 2006 AT 6:46 PM

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