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P0452 Diagnostic Trouble Code Discussion for September 2009

Fuel Tank Pressure Sensor Circuit Low Voltage

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Trouble Ticket Help Requests for DTC P0452
Help Request Posted
2004 Cadillac CTS 3.6L Poor Idle Quality, Hesitation, Cuts out, Stall, Poor Fuel Economy, MIL Lamp on VIN: 1G6DM57704
P0452: Fuel Tank Pressure Sensor Circuit Low Voltage. the vehicle came in under reduced engine power. Had 5 codes in the system for different things. When the codes are cleared they immediately come back on. If you try to clear the codes with the vehicle running the oil light will come on but will reset after res...
September 03, 2009
2007 Cadillac Escalade ESV 6.2L MIL Lamp on VIN: 1GYFK66817
P0452: Fuel Tank Pressure Sensor Circuit Low Voltage. Hey guys, We fixed this one. Came in with po 452, fuel pressure sensor low voltage. Dropped the tank and had signal, and return signal{1.4v}. Checked PCM and had no signal at pin 24,{green wire}. The "fix" was to repair the open wire near the rear of t...
September 25, 2009