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Home >> Chevrolet >> 2011 >> Caprice >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls And Fuel - 6.0L - DTC Diagnostics And Troubleshooting >> Diagnostic Information and Procedures >> DTC P0451-P0454 >> Circuit/System Verification

Circuit/System Verification

  1. Remove the fuel cap.
  2. Ignition ON, engine OFF.
  3. Observe the FTP sensor parameter with a scan tool. It should be 1.1-1.7 V
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