P1646 BUICK EVAP Vent Solenoid Output Circuit
Possible causes – Faulty EVAP Vent Solenoid– EVAP Vent Solenoid harness is open or shorted– EVAP Vent Solenoid circuit poor electrical connection When is the code detected? The Powertrain Control Module (PCM) has detected the EVAP Vent Solenoid circuit was