Any time a DTC calls out a "circuit Malfunction" it means there is something so wrong with the circuit that the PCM is unable to perform any self trouble shooting. Think blown fuse, short, ground fault, open, corrosion, or totally failed sensor.
Start with a through visual inspection of the wiring harness. Next confirm key on power in and out of fuse F2.8. OBTW, don't discount that a blown fuse couldn't be YOUR problem. Why? Because both sensors listed are on the same fuse.
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Next confirm key on power at the connector. For the EGR vacuum regulator solenoid the wire color is RD/YE.
This test checks the electrical function of the EGRVR solenoid. The test fails when the EGRVR circuit voltage is either too high or too low when compared to the expected voltage range. The EGR system must be enabled for the test to be completed
EGRVR circuit open
VPWR open to EGRVR solenoid
EGRVR circuit short to VPWR or GND
Damaged EGRVR solenoid
Damaged PCM
The EGR vacuum regulator solenoid resistance is from 26 to 40 ohms.
P0443 - EVAP Control System Canister Purge Valve Circuit Malfunction
The PCM monitors the state of the EVAP canister purge valve circuit output driver. The test fails when the signal moves outside the minimum or maximum limit for the commanded state.