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Home › Chevrolet › 2006 › Optra LS, Automatic › Repair and Diagnosis › Engine Performance › System › Engine Controls - 1.4L DOHC › Diagnostic Information and Procedures › DTC P0135 or P0141 › Component Testing

Component Testing

  1. Ignition OFF, disconnect the harness connector of the heated oxygen sensor (HO2S).
  2. Test the HO2S heater resistance for 3-35 ohms.
    • If the resistance is out of the specified range, replace the HO2S.
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