DTC Detection Logic
WARNING: This page is about a different car, the 2013 Infiniti FX50. However, it is still accessible from the selected car via links, so may be relevant.
| DTC No. |
Trouble diagnosis name |
DTC detecting condition |
Possible cause |
| P0643 |
Sensor power supply circuit short |
ECM detects that the voltage of power source for sensor is excessively low or high. |
- Harness or connectors
(Accelerator pedal position sensor 1 circuit is shorted.)
[Camshaft position sensor (bank 2) circuit is shorted.]
[Exhaust valve timing control position sensor (bank 2) circuit is shorted.]
(Power steering pressure sensor circuit is shorted.)
(Refrigerant pressure sensor circuit is shorted.)
(Throttle position sensor circuit is shorted.)
- Accelerator pedal position sensor
- Camshaft position sensor (bank 2)
- Exhaust valve timing control position sensor (bank 2)
- Power steering pressure sensor
- Refrigerant pressure sensor
- Throttle position sensor
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