P1665 Chevrolet -my light came on today what are my opptions.

Question

chck engine light came on today p1665 what are my opptions need more detail e vap control system vent vale solenoid control circuit is all it says in my book ?

Answer 1

P1665 Evap vent solenoid control circuit

On the Evap Vent valve on one side there should be battery voltage , it commands comes from the PCM which grounds the WHT wire to turn the evap vent solenoid on.In your case the it gets its ground when commanded on but the vent solenoid fail to tun on (or close)