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Chevrolet
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2004
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Optra Base, 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 - 1.8L (L79) - DTC P0106 To DTC P0300
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DTC P0137
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Conditions for Setting the DTC
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Closed Loop Test
July 1:
So it begins
. Don't worry, this is not in the correct legal jurisdiction!
Closed Loop Test
The ECM detects that the HO2S 2 voltage is less than 52 mV.
The condition exists for more than 4 minutes.