DTC P0443: EVAP Purge Solenoid Control Circuit: Description

An ignition voltage is supplied directly to the Evaporative Emission (EVAP) canister purge valve. The EVAP canister purge 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 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.