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Home › Chevrolet › 2006 › Optra LS, Standard › Repair and Diagnosis › Engine Performance › System › Engine Controls - 1.4L DOHC › Diagnostic Information and Procedures › DTC P0133 › Circuit/System Verification

Circuit/System Verification

  1. Verify that other DTCs are not set.
  2. Operate the vehicle within the conditions for running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records. DTC P0133 or P0139 should not set.
  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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