DTC P0446-00: CV Solenoid Valve Control Circuit Problem

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P0446-00: (PCM - VIN Y) DETECTION CONDITION AND POSSIBLE CAUSE

System malfunction location	CV solenoid valve control circuit problem
Detection condition	The PCM monitors the CV solenoid valve circuit for an electrical failure. The test fails when the signal moves outside the minimum or maximum allowable calibrated parameters for a specified canister vent duty cycle by the PCM command.
Fail-safe	Not applicable
Possible cause	Malfunction in wiring harness (including connector/terminal) between main relay and CV solenoid valve (see CIRCUIT INSPECTION .) (see CLEARING DTC .) Malfunction in wiring harness (including connector/terminal) between CV solenoid valve and PCM (see CIRCUIT INSPECTION .) (see CLEARING DTC .) CV solenoid valve malfunction (Refer to CANISTER VENT (CV) SOLENOID VALVE INSPECTION (VIN Y) in the service information.) PCM malfunction (Refer to applicable PCM REMOVAL/INSTALLATION (VIN Y) in the service information.)
Repeatability verification procedure	Clear the DTC recorded in the memory. (see CLEARING DTC .) Start the engine and warm it up completely. Perform the KOER self test. (See DTC INSPECTION .)
Courtesy of MAZDA MOTORS CORP.
1	Battery
2	main relay
3	CV solenoid valve
4	PCM