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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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