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P0642 Diagnostic Trouble Code Discussion for February 2010

Sensor Reference Voltage 1 Circuit Low


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Trouble Ticket Help Requests for DTC P0642
Help Request Posted
2005 Chevrolet Silverado 2500 HD 6.6L Stall VIN: 1GCHK23295
P0642: 5-Volt Reference 1 Circuit Low Voltage. Cleared codes, only one that comes back is 642. Truck will start, run fine then start running rough and stall. Sometimes will restart right away. Not a diesel guy. Anyone seen this before? Thanks
February 17, 2010
2005 Chevrolet Silverado 2500 HD 6.6L Stall VIN: 1GCHK23295
P0642: 5-Volt Reference 1 Circuit Low Voltage. Cleared codes, only one that comes back is 642. Truck will start, run fine then start running rough and stall. Sometimes will restart right away. Not a diesel guy. Anyone seen this before? Thanks
February 17, 2010