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P0643 Diagnostic Trouble Code Discussion for July 2011

Sensor Power Supply Circuit Malfunction


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Trouble Ticket Help Requests for DTC P0643
Help Request Posted
2008 Nissan Titan SE 5.6L MIL Lamp on, limp mode VIN: 1N6BA07F68
P0643: sensor power supply. this thing is stuck in limp mode. p0643 pops instantly and the others come on after a while. i've checked for shorts, corrosion, bent pins, and everything else i can think of. the only weird thing i can find is one of the vref signals is 3.5 volts. it has two ...
July 08, 2011
2008 Nissan Titan SE 5.6L MIL Lamp on, limp mode VIN: 1N6BA07F68
P0643: sensor power supply. this thing is stuck in limp mode. p0643 pops instantly and the others come on after a while. i've checked for shorts, corrosion, bent pins, and everything else i can think of. the only weird thing i can find is one of the vref signals is 3.5 volts. it has two ...
July 08, 2011