A P0444 code on your 2023 Chevrolet Traverse indicates an open circuit condition in the EVAP purge control valve circuit. An open circuit means electrical continuity is broken, preventing the ECM from operating the purge valve.
Open Circuit Characteristics
An open circuit indicates a break in the electrical path. The ECM attempts to control the purge valve but cannot complete the circuit. This is the opposite of a short circuit—instead of unintended current paths, there's no current flow at all.
Traverse EVAP System
The 2023 Chevrolet Traverse uses GM's 3.6L V6 engine. The EVAP purge valve is part of the sophisticated emissions control system. When the circuit is open, the valve remains closed and no purge operation occurs.
Causes of Open Circuits
The valve connector may be disconnected. Wiring between the ECM and valve may be broken. The valve's solenoid coil may have failed open internally. Corroded terminals can create intermittent or permanent opens. Damaged wiring harness sections break circuit continuity.
Diagnostic Process
Verify the purge valve connector is fully seated. Measure solenoid coil resistance—infinite ohms indicates an open coil. Test wiring continuity from valve connector to ECM. Check for damaged wiring, especially in areas prone to chafing. If wiring is intact and connector secure, the valve has failed.