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Home >> Chevrolet >> 2006 >> Epica LTZ >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - 2.5L (LBK) - DTC P2122 To DTC P2422 >> DTC P2422 >> Circuit/System Verification
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Circuit/System Verification

  1. Ignition ON, verify DTCs P0444, P0445, P0447, P0448, P0451, P0452, P0453, or P0454 are not set.
  2. Verify the scan tool fuel tank pressure (FTP) sensor parameter is near 0 mmHg (0 in H2O).
  3. If the vehicle passes the Circuit/System Verification Test, then operate the vehicle within the conditions for running the DTC. You may also operate the vehicle within the conditions that are captured in the Freeze Frame/Failure Records Data List.
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