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P0452 Diagnostic Trouble Code Discussion for December 2005

Fuel Tank Pressure Sensor Circuit Low Voltage

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Trouble Ticket Help Requests for DTC P0452
Help Request Posted
1998 Chevrolet Express 1500 5.7L MIL Lamp on VIN: 1GCFG15R6W
P0452: Fuel Tank Pressure Sensor Circuit Low Voltage. Van came in with code for fuel tank press sensor volt low. Use tech 2 to check data value a little over 7.5 inh20. sensor has 5.0 volt ref and good ground to it, but will not produce a signal when hooked up. After a lot of testing I realized that I could get a...
December 05, 2005
1998 Ford F-150 Lariat 5.4L MIL Lamp on VIN: 1FTRX18L6W
P0452: fuel tank presure circuit input below below minimum. truck comes in once a week with mill light on code po452 in history. fule tank presure reading normal at 2.75v. have been unable to duplicate prooblem in shop
December 05, 2005