On Board Diagnosis Logic: Notes
This self-diagnosis has the one trip detection logic
.
ON BOARD DIAGNOSIS LOGIC
| 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 circuit is shorted.)
(PSP sensor circuit is shorted.)
(Refrigerant pressure sensor circuit is shorted.)
- Accelerator pedal position sensor
(APP sensor 1)
- EVAP control system pressure sensor
- Power steering pressure sensor
- Refrigerant pressure sensor
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