DTC P0443:00: Notes

DTC P0443:00 (L3 WITH TC) DETECTION CONDITION & POSSIBLE CAUSES

DTC P0443:00	Purge solenoid valve circuit malfunction
DETECTION CONDITION	The PCM monitors the input voltages from the purge solenoid valve. If the voltage remains low or high for s, the PCM determines that the purge solenoid valve circuit has a malfunction. 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 first drive cycle. FREEZE FRAME DATA (Mode 2)/Snapshot data is available. The DTC is stored in the PCM memory.
POSSIBLE CAUSE	Short to ground in wiring harness between purge solenoid valve terminal B and PCM terminal 2AB Purge solenoid valve malfunction Purge solenoid valve connector or terminals malfunction Short to ground or open circuit in purge solenoid valve power supply circuit Short to ground in wiring harness between main relay terminal C and purge solenoid valve terminal A ENG BAR 15 A fuse malfunction Open circuit in wiring harness between main relay terminal C and purge solenoid valve terminal A PCM connector or terminals malfunction Short to power supply in wiring harness between purge solenoid valve terminal B and PCM terminal 2AB Open circuit in wiring harness between purge solenoid valve terminal B and PCM terminal 2AB PCM malfunction
Courtesy of MAZDA MOTORS CORP.

DTC P0443:00

Purge solenoid valve circuit malfunction

DETECTION CONDITION

The PCM monitors the input voltages from the purge solenoid valve. If the voltage remains low or high for s, the PCM determines that the purge solenoid valve circuit has a malfunction.

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 first drive cycle.
FREEZE FRAME DATA (Mode 2)/Snapshot data is available.
The DTC is stored in the PCM memory.

POSSIBLE CAUSE

Short to ground in wiring harness between purge solenoid valve terminal B and PCM terminal 2AB
Purge solenoid valve malfunction
Purge solenoid valve connector or terminals malfunction
Short to ground or open circuit in purge solenoid valve power supply circuit
- Short to ground in wiring harness between main relay terminal C and purge solenoid valve terminal A
- ENG BAR 15 A fuse malfunction
- Open circuit in wiring harness between main relay terminal C and purge solenoid valve terminal A
PCM connector or terminals malfunction
Short to power supply in wiring harness between purge solenoid valve terminal B and PCM terminal 2AB
Open circuit in wiring harness between purge solenoid valve terminal B and PCM terminal 2AB
PCM malfunction

Courtesy of MAZDA MOTORS CORP.