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P0642 Diagnostic Trouble Code Discussion for August 2016

Sensor Reference Voltage 1 Circuit Low


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Trouble Ticket Help Requests for DTC P0642
Help Request Posted
2007 Ford Fusion SE 3.0L MIL Lamp on VIN: 3FAHP07197
P0642: sensor reference voltage A circuit low. ... power and no a/c concern.It had a code p0642 sensor reference voltage A circuit low. I started unplugging sensors one at a time, and when I unplugged the map sensor, it sets a map code, but the 642 goes away, it runs fine, and a/c works, so i ordered a new...
August 12, 2016