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Home >> Buick >> 2015 >> Regal GS, AWD >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Engine Controls And Fuel - 2.0L (LTG) - DTC P0010 To DTC P0333 >> Diagnostic Information and Procedures >> DTC P0133, P013A, P013B, P013E, P013F, P015A, P015B, P2270, or P2271: HO2S >> Action Taken When the DTC Sets >> P013A

Action Taken When the DTC Sets: P013A

The engine control module detects that the accumulated mass air flow monitored during rich-to-lean transitions between 450-150 mV is greater than 75 grams.