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P0452 Diagnostic Trouble Code Discussion for October 2007

Fuel Tank Pressure Sensor Circuit Low Voltage

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Trouble Ticket Help Requests for DTC P0452
Help Request Posted
2001 Chevrolet Blazer Xtreme 4.3L MIL Lamp on VIN: 1GNCS18WX1
P0452: Fuel Tank Pressure Sensor Circuit Low Voltage. i have this blazer in the shop that keeps showing codes po449 and po452. i can clear the codes but they come back as soon i clear them .i have replaced the fuel pump module and pressure senso with dealer parts.every time i try to cut the vent valve on and off ...
October 25, 2007