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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.

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