DTC Detection Logic
WARNING: This page is about a different car, the 2008 Infiniti EX35. However, it is still accessible from the selected car via links, so may be relevant.
DTC DETECTING CONDITION AND POSSIBLE CAUSE REFERENCE
| DTC No. |
Trouble diagnosis name |
DTC detecting condition |
Possible cause |
| P0643 |
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.)
(TP sensor circuit is shorted.)
[CMP sensor (PHASE) (bank 1) circuit is shorted.]
[EVT control position sensor (bank 1) circuit is shorted.]
(PSP sensor circuit is shorted.)
- Accelerator pedal position sensor
- Throttle position sensor
- Camshaft position sensor (PHASE) (bank 1)
- Exhaust valve timing control position sensor (bank 1)
- Power steering pressure sensor
|