Faulty EGR Vent Solenoid
EGR Vent Solenoid harness is open or shorted
EGR Vent Solenoid circuit poor electrical connection
Engine Light ON (or Service Engine Soon Warning Light)
With the key on or engine running, then with the Vent solenoid requested on (Test 1), the Powertrain Control Module (PCM) detects the voltage on the solenoid control circuit was high (12v), or with the Vent solenoid requested off, the voltage on the Vent solenoid control circuit was near zero (0) volts.