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Home › Cadillac › 2006 › DTS 4.6 9 › Repair and Diagnosis › Engine Performance › System › Engine Control System - 4.6L - DTC P0403 To P1381 › DTC P0452 › Circuit/System Verification

Circuit/System Verification

  1. Remove the fuel cap.
  2. Turn ON the ignition, with the engine OFF.
  3. Observe the Fuel Tank Pressure Sensor parameter with a scan tool.
  4. The FTP Sensor parameter should be 1.5 volts
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