DTC P0443: Notes

DTC P0443 [L3] CHART

DTC P0443	Purge solenoid valve circuit problem
DETECTION CONDITION	The PCM monitors the input voltages from the purge solenoid valve. If the voltage at PCM terminal 2AN remains low or high, the PCM determines that the purge solenoid valve circuit has malfunction. Diagnostic support note This is a continuous monitor (CCM). 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	Purge solenoid valve malfunction Connector or terminal malfunction Short to ground in wiring harness between purge solenoid valve terminal A and PCM terminal 2AN Open circuit in wiring harness between main relay and purge solenoid valve terminal B Open circuit in wiring harness between purge solenoid valve terminal A and PCM terminal 2AN Short to power supply in wiring harness between purge solenoid valve terminal A and PCM terminal 2AN PCM malfunction