On Board Diagnosis Logic: Notes
This self-diagnosis has the one trip detection logic.
DTC DETECTING CONDITION CHART
| DTC No. |
Trouble diagnosis name |
DTC detecting condition |
Possible cause |
P0643
0643 |
Sensor power supply circuit short |
ECM detects a voltage of power source for sensor is excessively low or high. |
- Harness or connectors (APP sensor 1 circuit is shorted.)
(EVAP control system pressure sensor is shorted.)
(Refrigerant pressure sensor circuit is shorted.)
(PSP sensor circuit is shorted.)
(Battery current sensor circuit is shorted.)
- Accelerator pedal position sensor
- EVAP control system pressure sensor
- Refrigerant pressure sensor
- Power steering pressure sensor
- Battery current sensor
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