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Chevrolet
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2008
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Optra5 LT, Automatic
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Repair and Diagnosis
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Engine Performance
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System
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Engine Controls And Fuel - 1.8L (LDA)
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Diagnostic Information and Procedures
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DTC P0135 or P0141
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Component Testing
Component Testing
Ignition OFF, disconnect the harness connector at the HO2S.
Test the HO2S heater resistance for 3-35 ohms.
If not within the specified range, replace the HO2S.