check engine light on code po443 evap emission system on 2000 Cadillac DeVille

check engine light on code po443 evap emission system purge vent soleniod circuit condition. what does this mean.

by in Marion, MA on August 22, 2010
2 answers 1 comment
ANSWER by on August 22, 2010
It means that the Vent Solenoid near the Fuel Tank is not closing when the the EVAP System self test is run by the Computer. I have replaced several of these on GM vehicles.
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COMMENT by on August 30, 2010
thanks. does the gas tank have to be dropped to access or is it under rear seat?
ANSWER by on January 12, 2011
WE GATE A CODE NUMBER - PO443
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like to know what is mean and how much it cost to fix it