DTC P0443:00 [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 P0443:00	Purge solenoid valve circuit problem
DETECTION CONDITION	The PCM monitors the purge solenoid valve control signal voltage and current If the following conditions are met, the PCM determines that there is the purge solenoid valve control circuit problem. The PCM turns the purge solenoid valve off, but the voltage of the purge solenoid valve control signal remains low. The PCM turns the purge solenoid valve on, but the current of the purge solenoid valve control signal remains high. 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. FREEZE FRAME DATA is available. The DTC is stored in the PCM memory.
POSSIBLE CAUSE	Purge solenoid valve connector or terminal malfunction Open circuit in wiring harness between main relay terminal D and purge solenoid valve terminal B PCM connector or terminal malfunction Short to ground in wiring harness between purge solenoid valve terminal A and PCM terminal 2C Short to power supply in wiring harness between purge solenoid valve terminal A and PCM terminal 2C Purge solenoid valve malfunction Open circuit in wiring harness between purge solenoid valve terminal A and PCM terminal 2C PCM malfunction
Courtesy of MAZDA MOTORS CORP.

DTC P0443:00

Purge solenoid valve circuit problem

DETECTION CONDITION

The PCM monitors the purge solenoid valve control signal voltage and current If the following conditions are met, the PCM determines that there is the purge solenoid valve control circuit problem.
- The PCM turns the purge solenoid valve off, but the voltage of the purge solenoid valve control signal remains low.
- The PCM turns the purge solenoid valve on, but the current of the purge solenoid valve control signal remains high.

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.
FREEZE FRAME DATA is available.
The DTC is stored in the PCM memory.

POSSIBLE CAUSE

Purge solenoid valve connector or terminal malfunction
Open circuit in wiring harness between main relay terminal D and purge solenoid valve terminal B
PCM connector or terminal malfunction
Short to ground in wiring harness between purge solenoid valve terminal A and PCM terminal 2C
Short to power supply in wiring harness between purge solenoid valve terminal A and PCM terminal 2C
Purge solenoid valve malfunction
Open circuit in wiring harness between purge solenoid valve terminal A and PCM terminal 2C
PCM malfunction

Courtesy of MAZDA MOTORS CORP.