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Home >> Pontiac >> 2005 >> Grand Prix GXP >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 6 (Engine Controls - 3.8L - DTC P0406 To DTC P1111) >> DTC P0443: Evaporative Emission (EVAP) Purge Solenoid Control Circuit >> Circuit Description

Circuit Description

WARNING: This page is about a different variant/trim than selected.

An ignition voltage is supplied directly to the evaporative emission (EVAP) canister purge solenoid valve. The EVAP canister purge solenoid valve is pulse width modulated (PWM). The scan tool displays the amount of ON time as a percentage. The control module monitors the status of the driver. The control module controls the EVAP canister purge solenoid valve ON time by grounding the control circuit via an internal switch called a driver. If the control module detects an incorrect voltage for the commanded state of the driver, this DTC sets.