DTC P0443: Notes
DETECTION CONDITION AND POSSIBLE CAUSE (DTC P0443)
| DTC P0443 |
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 during first drive cycle.
- FREEZE FRAME DATA is available.
- The DTC is stored in the PCM memory.
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| 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 2C
- 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 2C
- Short to power supply in wiring harness between purge solenoid valve terminal A and PCM terminal 2C
- PCM malfunction
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 Courtesy of MAZDA MOTORS CORP.
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