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Home >> Chevrolet >> 2006 >> Impala SS >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - 5.3L - DTC P0016 To DTC P0135 >> DTC P0131 >> Conditions for Setting the DTC >> Lean Test

Lean Test

The ECM detects that the affected HO2S voltage parameter is less than 200 mV for 165 seconds.