DTC Detection Logic
WARNING: This page is about a different car, the 2012 Infiniti M35h. However, it is still accessible from the selected car via links, so may be relevant.
| DTC No |
Trouble diagnosis name (Trouble diagnosis content) |
DTC detecting condition |
Possible cause |
| P0643 |
SENSOR POWER/CIRC (Sensor power supply circuit short) |
ECM detects that the voltage of power source for sensor is excessively low or high. |
- Harness or connectors (TP sensor circuit is shorted.) [CMP sensor (PHASE) (bank 1) circuit is shorted.] [Manifold absolute pressure (MAP) sensor circuit is shorted.] (Exhaust valve timing control position sensor circuit is shorted.) (EOP sensor circuit is shorted.)
- Throttle position sensor
- Camshaft position sensor (PHASE) (bank 1)
- Manifold absolute pressure (MAP) sensor
- Exhaust valve timing control position sensor
- EOP sensor
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