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P0643 Diagnostic Trouble Code Discussion for June 2011

Sensor Power Supply Circuit Malfunction

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Trouble Ticket Help Requests for DTC P0643
Help Request Posted
2006 Nissan Sentra S 1.8L no accelleration VIN: 3N1CB51D46
P0643: Sensor Power Supply Circuit Malfunction. ... p2138, p0643. i have only 1.63 vots on app sensor 1 5v line and 5v on app2. checked all wires, grounds, both at app sensor and computer.when it runs ok all voltage are normal and when acts up app1 s...
June 08, 2011