DTC P0443: EVAP Control System Purge Control Valve Circuit Malfunction: Condition

WARNING: This page is about a different car, the 2002 Mazda 626. However, it is still accessible from the selected car via links, so may be relevant.

DTC is set when purge solenoid valve circuit has failed. Possible causes are:

Open or short in wiring harness.
Purge solenoid valve malfunction.
PCM malfunction.