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P0643 Diagnostic Trouble Code Discussion for February 2011

Sensor Power Supply Circuit Malfunction

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Trouble Ticket Help Requests for DTC P0643
Help Request Posted
2006 Nissan Quest 3.5L no power VIN: 5N1BV28U46
P0643: Sensor Power Supply Circuit Malfunction. Hi, I have a 2006 Nissan quest with a p0643 code. Once in a while the car will have no throttle response and check engine light goes on. The 5v goes to psp sensor, a/c pres sensor, app1 and evap pres control sensor. I can't reproduce the problem. I'm guessing ...
February 15, 2011