DTC P0443: Notes
DTC P0443 DETECTION & CONDITION POSSIBLE CAUSES
| DTC P0443 |
Purge solenoid valve circuit problem |
| DETECTION CONDITION |
- The PCM monitors the purge solenoid valve control voltage when the PCM turns the purge solenoid valve off. If the control voltage is less than 5.8 V
, the PCM determines that the purge solenoid valve control circuit voltage is low.
- The PCM monitors the purge solenoid valve control voltage when the PCM turns the purge solenoid valve on. If the control voltage is more than 11.5 V
, the PCM determines that the purge solenoid valve control circuit voltage is 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 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
- Open circuit in wiring harness between main relay terminal C and purge solenoid valve terminal A
- Short to ground in wiring harness between main relay terminal C and purge solenoid valve terminal A
- Open circuit in wiring harness between purge solenoid valve terminal B and PCM terminal 2P
- Short to power supply in wiring harness between purge solenoid valve terminal B and PCM terminal 2P
- Short to ground in wiring harness between purge solenoid valve terminal B and PCM terminal 2P
- PCM malfunction
|
 Courtesy of MAZDA MOTORS CORP.
|