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Home >> Chevrolet >> 2004 >> Optra Base, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - 1.4L DOHC - DTC P0107 To DTC P0335 >> DTC P0137 >> Conditions for Setting the DTC >> Closed Loop Test

Closed Loop Test

The ECM detects that the HO2S 2 voltage is less than 52 mV.
The condition exists for more than 4 minutes.

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