DTC P0443: EVAP Control System - Purge Control Valve Circuit Malfunction: Condition
WARNING: This page is about a different car, the 2002 Suzuki XL-7. However, it is still accessible from the selected car via links, so may be relevant.
DTC P0443 is set when EVAP canister monitored signal is different from EVAP canister command signal. MIL is illuminated when ECM detects malfunction during 2 consecutive drive cycles.