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

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
check engine light on code po443 evap emission system purge vent soleniod circuit condition. what does this mean.
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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