DTC P0446:00 [L5]: Notes

WARNING: This page is about a different car, the 2009 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.

DETECTION CONDITION & POSSIBLE CAUSES

DTC P0446:00	CV solenoid valve control circuit
DETECTION CONDITION	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 Diagnostic support note This is a continuous monitor (CCM). The MIL illuminates if the PCM detects the above malfunction condition in two consecutive drive cycles or in one drive cycle while the DTC for the same malfunction has been stored in the PCM PENDING CODE is available if the PCM detects the above malfunction condition during the first drive cycle. FREEZE FRAME DATA is available The DTC is stored in the PCM memory.
POSSIBLE CAUSE	CV solenoid valve connector or terminal malfunction Open circuit in wiring harness between battery positive terminal and CV solenoid valve terminal A PCM connector or terminal malfunction Short to ground in wiring harness between CV solenoid valve terminal B and PCM terminal 1M Short to power supply in wiring harness between CV solenoid valve terminal B and PCM terminal 1M CV solenoid valve malfunction Open circuit in wiring harness between CV solenoid valve terminal B and PCM terminal 1M PCM malfunction
Courtesy of MAZDA MOTORS CORP.

DTC P0446:00

CV solenoid valve control circuit

DETECTION CONDITION

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

Diagnostic support note

This is a continuous monitor (CCM).
The MIL illuminates if the PCM detects the above malfunction condition in two consecutive drive cycles or in one drive cycle while the DTC for the same malfunction has been stored in the PCM
PENDING CODE is available if the PCM detects the above malfunction condition during the first drive cycle.
FREEZE FRAME DATA is available
The DTC is stored in the PCM memory.

POSSIBLE CAUSE

CV solenoid valve connector or terminal malfunction
Open circuit in wiring harness between battery positive terminal and CV solenoid valve terminal A
PCM connector or terminal malfunction
Short to ground in wiring harness between CV solenoid valve terminal B and PCM terminal 1M
Short to power supply in wiring harness between CV solenoid valve terminal B and PCM terminal 1M
CV solenoid valve malfunction
Open circuit in wiring harness between CV solenoid valve terminal B and PCM terminal 1M
PCM malfunction

Courtesy of MAZDA MOTORS CORP.