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P0452 Diagnostic Trouble Code Discussion for August 2006

Fuel Tank Pressure Sensor Circuit Low Voltage

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Trouble Ticket Help Requests for DTC P0452
Help Request Posted
2003 Chevrolet Impala 3.4L MIL Lamp on VIN: 2G1WF52E73
P0452: Fuel Tank Pressure Sensor Circuit Low Voltage. Hi Guys, I have a hard code on this one PO452. I have 5v ref signal at all the spots on the computer. I back probe 30,32,33,34. I'm not sure what the voltage should be at 55 and when I follow the wires 11,14,21 what are those values. I understand the EVAP code...
August 24, 2006